# Find the least common denominator of the two rational expressions. 4k 2 ________ + ________ k^2 - 9 3 - k

95,756 questions-
## MATH

Find the least common denominator of the two rational expressions. 4k 2 ________ + ________ k^2 - 9 3 - k

*asked by Skye on May 30, 2014* -
## english help me

A). Put the verb into the correct form! (conditional sentences) 1. If I offered the job, I think I "will take" (take) it.

*asked by rudy on May 18, 2015* -
## Algebra

A. Find the LCD for the given rational expression. B. Rewrite them as equivalent rational expressions with the least common denominator. 5/a^2+5a+4, 4a/a^2+3a+2

*asked by Anonymous:please Help! on October 10, 2017* -
## Algebra

A. Find the LCD for the given rational expression. B. Rewrite them as equivalent rational expressions with the least common denominator. 5/a^2+5a+4, 4a/a^2+3a+2

*asked by Anonymous:please Help! on October 10, 2017* -
## evans

Find the least common denominator of the rational expressions. and

*asked by algebra on November 23, 2014* -
## Math help!

What is the simplified form of; 3a^4b^-2c^3 4, -2, and 3 are powers A: 81a^4c^3 ________ b^2 B: 81a^4 ________ b^2c^3 C: 3a^4 ________ b^2c^3 D: 3a^4c^3 ________ b^2 I looked through my lesson but couldn't find out how to do this... I think its D?

*asked by No clue on February 11, 2019* -
## english

Fill in the spaces with the correct form of the verb in present continues tense. Hey! Do you want to hear about what my family (do) ________ ________(1) right now? Well, I hope you do, because I am going to tell you! Right now, my dad (work) ________

*asked by leena on July 16, 2013* -
## Pre-Cal

Find sin 2x, cos 2x, and tan 2x from the given information. [1]. sin x = 8/17, x in Quadrant I 1). sin 2x =________. 2). cos 2x =________. 3). tan 2x =________. [2]. sin x = -5/13, x in Quadrant III 1). sin 2x =________. 2). cos 2x =________. 3). tan 2x

*asked by Amber on July 7, 2016* -
## math

suppose you want to take a karate class. the first class is january 16th. the class meets every week for 6 weekswhats the date of the last class? Start at 1/16 and add 7 days six times to get 1/23, 1/30, 2/6, 2/13, 2/20 Find the sum the each letter stands

*asked by erin on October 18, 2006* -
## math

What is the least common denominator of the rational expressions x-1/x^2+8x+7 and -3/x^2+x

*asked by Anonymous on March 11, 2010* -
## English

No smoking = Do not smoke here. No parking = Do not park here. No swimming = Do not swim herre. No tipping = Do not tip here. No ________ No ________ No _________ (Would you let me know some more expressions which signs say? Or do you have a good website

*asked by John on November 19, 2008* -
## SS

For questions 1-10 choose the letter of the answer that matches the description. Not all letters will be used. A. sectionalism B. Missouri Compromise C. Andrew Jackson D. John C. Calhoun E. Articles of Confederation F. cabinet G. tariff H. treason I.

*asked by . on December 12, 2016* -
## statistics

An investigator wants to estimate caffeine consumption in high school students. How many students would be required to estimate the proportion of students who consume coffee? Suppose we want the estimate to be within 5% of the true proportion with 95%

*asked by Yvette on June 8, 2014* -
## math

Identify the property or rule that justifies each step in the calculation. 4/7k+(j+1/7k) ________ (4/7k+1/7k)+j ________ k(4/7+1/7)+j _________ (4/7k+1/7k)+j ________ 5/7k+j _______ Hint: you cannot say that 5/7k+j is the answer

*asked by syram on March 6, 2013* -
## math

A.) write the rational expression as an equivalent expression whose denominator is the given polynomial. 1.) 6/7x^2y = ________/49x^3y^2 B.) perform the indicated operations, simplify if possible. 2.) x^2-3x-4/x^2-16 x x+4/3x-9

*asked by Allie on December 6, 2015* -
## math

I have finished all my homework but I have one problem that I cannot answer. The teacher said that no one could probably answer this. Can someone help? We have to find the next three numbers in the pattern and explain the rule for the pattern. 8, 27, 64,

*asked by Michael on August 9, 2006* -
## algebra

least common denominator for these two rational expressions. ( / stands for fraction bar and the ^ means it's squared. i don't understand these at all. a/ a^2-36 2a/a^2+5a-6

*asked by whitney on February 28, 2012* -
## Math

Add or subtract the following rational expressions. Be sure to look for factors before trying to determine a common denominator, and simplify your answers, if possible. 16x-12/4x^2+5x-6-3/x+2

*asked by Anonymous on February 8, 2016* -
## English

Can someone please help confirm my answers are correct? Thanks 1. After a ________ consideration, I’ve decided to use my ________ savings. A. weeks’/lives B. week’s/life’s C. weeks’/live’s D. week’s/lifes’ I think it's B. 2. Several

*asked by Heather on May 16, 2018* -
## grammar

fill in the blanks.With diterminers. Ranjit is _______reckless young man . In ________ quest to make money, he belittles ________people, including ________ employees of ________ own company there _______excuse for ______ rude behaviour on _______part.

*asked by Anonymous on January 4, 2012* -
## math

complete each equation.. 1.5mi/min=________ mi/hr $1.92 per lb=________ per oz $18,500 salary per year=______ per week 42 hr/week=________ hr/day

*asked by Carly on September 19, 2012* -
## Chemistry

At 906 K, 3.60 mol of ammonia gas is placed into 2.00 L vessel and allowed to decompose to the elements nitrogen and hydrogen. If Kc = 6.56 E-3 for this reactions at this temperature, calculate the equilibrium concentration of each component at

*asked by Anonymous on October 2, 2011* -
## Chemistry

Another fill in the blank Show the chemical reaction equation for the process known as photosynthesis by filling in the blanks below ________+______+________ ---> _____+________ search for photosynthesis reaction on Google.

*asked by Steve on May 16, 2007* -
## algebra

what are rational expressions? Why must we always be mindful of the final value of the denominator in a rational expression? For example, consider the rational expression 3x/(x2 – 16). What values in the denominator must we be mindful of? Explain why.

*asked by thresea on October 5, 2011* -
## spanish

Fill in the blank using the past of hacer or dar as needed so that each sentence makes sense. (1) Nosotros le ________ dinero. (2) Yo le __________ __ un regalo. (3) Tú le _________ ___ el lápiz. (4) Ellos ________ __ una película. (5) Yo __________ __

*asked by Caylie on April 25, 2016* -
## chemistry

Balance these nuclear equations. Can some please help I don't understand these at all 1. 35/17 Cl + 1n -> 35/16S + _____ 2. 229/90 Th -> 4/2 He + ______ 3. 20/8 O -> 20/9F + ________ 4. 54/26Fe + 1n -> 1H + _______ 5. 104/47Ag -> 0/-1e + ______ 6. ________

*asked by jasmine on October 25, 2013* -
## English help

A music conductor is one who ________. To lead one in is to ________, and abduct is to ________. Chrono means "time" so to "synchronize" means to __________. Since phon means sound, symphony must be _______. If thesis means "idea", then synthesis must mean

*asked by Anonymous on April 22, 2014* -
## algebra !

i need help on adding and subtacting rational numbers like -7over12+5 over 6 When adding rational numbers we need a common denominator. We have -7/12 + 5/6 What is the least common multiple of 12 and 6? After you find that make sure both fractions are

*asked by makhissa on September 19, 2006* -
## Algebra 2

1. What is the determinant of the matrix? [5 6] [2 9] a. -33 b. 6 c. -6 d. 33

*asked by Anastassia on May 4, 2016* -
## Geometry

Complete the two column proof. Given: angle 2 and angle 5 are supplementary Prove: l is parallel to m Statements: 1. BLANK 2. angle 3 is congruent to angle 2 3. angle 3 and angle 5 are supplementary 4. BLANK Reasons: 1.________ 2.________ 3.________

*asked by Blair Needs Ms. Sue on October 15, 2015* -
## spanish

Fill in the blank using the past of hacer or dar as needed so that each sentence makes sense. 1-Nosotros le ________ dinero. 2-Yo le __________ __ un regalo. 3-Tú le _________ ___ el lápiz. 4-Ellos ________ __ una película. 5-El me ________ ____ $10

*asked by HeyBro on May 25, 2017* -
## Russian Literature

I have to write out a thesis and outline about how Russians view American medical technology/advancements/procedures/doctors. I have no idea how to start this and how to prove my topic. Here is the magic thesis statement: By looking at ________, we can see

*asked by Jojo on March 22, 2009* -
## General Chemistry

A student mixed the following reactants, using the general procedure for the experiment: 10.0 mL of 0.10 M KI, 10.0 mL of 0.0010 M Na2S2O3, 20.0 mL of 0.040 M K2S2O8, and 10.0 mL of 0.10M HCl. It took about 75 seconds for the mixture to turn blue. a. By

*asked by Alexander on February 19, 2017* -
## Chemistry

. A student mixed the following reactants, using the general procedure for the experiment: 10.0 mL of 0.10 M KI, 10.0 mL of 0.0010 M Na2S2O3, 20.0 mL of 0.040 M K2S2O8, and 10.0 mL of 0.10M HCl. It took about 75 seconds for the mixture to turn blue. a. By

*asked by Anonymous on February 19, 2017* -
## algebra

Find the LCD for the given rational expressions, and convert each rational expression into an equivalent rational expression with the LCD as the denominator. 4/x-y , 5/2y-2x

*asked by Joe on July 13, 2009* -
## science

- bad - ethics - explain - good - limited - observed - scientific methods - tested Science is _________ by what its can ________. For a question or problem to be studied through________, there must be variables that can be ________, meausured, or belief

*asked by kayla on September 16, 2010* -
## Calculus

Answer the following questions for the function f(x)=(x^3-9x^2+27x-27)/(x^2-6x+8) defined on the interval [-14, 22]. Enter points, such as inflection points in ascending order. A. The function f(x) has vertical asymptotes at _______ and ________. B. f(x)

*asked by Nate on November 5, 2013* -
## Physics

A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.40 m/s2 for 14.0 s. 2. Maintain a constant velocity for the next 2.85 min. 3. Apply a constant negative acceleration of −8.39 m/s2 for 4.00 s. (a)

*asked by Brooke on September 11, 2012* -
## SAT Math

True or False: The least common denominator of each denominator in the following rational expression is (z-4)(z+4)(z-1)(z+1): 8 / z^2+5z+4 = 1 / z-4 + 1 / z-1 I am stuck on this one...

*asked by mysterychicken on May 31, 2013* -
## algebra 2

Find the LCD for the following pairs of rational expressions. numerator 8 divided by denominator x negative 13 and numerator 7 divided by denominator x plus 15

*asked by SaRa on October 29, 2009* -
## Maths

Find the denominator n of the rational number kn (k,n are both integers) such that ∣Root 2 - k/n∣ is the smallest possible, out of all rational numbers with denominator less than 1000?

*asked by ABCD on May 29, 2013* -
## pigskin geography week 7

identify the states in which 2 games will be played ________,________,__________ 1 is New York and another is Pensilvannia right?

*asked by mia on October 14, 2013* -
## english

________ from your office left ________ keys at the reception desk. a. Some one, their b. Some one, his or her c. Someone, their d. Some one, his e. Someone, his or her I think e is correct

*asked by Allan on August 1, 2018* -
## health

________ physical activity and ________ time spent in sedentary behaviors.

*asked by Anonymous on November 13, 2013* -
## Geometry

If two sides of a triangle are 12 cm and 20 cm, the third side must be larger than ________ cm and smaller than ________ cm. Fill in the blank and explain, please and thank you!

*asked by Jasmin on January 23, 2010* -
## English

In the Miranda decision, the Supreme Court ________ that officers ________ warnings to potential criminals.

*asked by Anonymous on January 19, 2017* -
## Pre-Cal

Find sin x/2, cos x/2, and tan x/2 from the given information. [1]. sin x = 5/13, 0° < x < 90° 1). sin x/2 =________. 2). cos x/2 =________. 3). tan x/2 =________. [Note: Plz help with these 3]

*asked by Amber on July 7, 2016* -
## U.S History

The first two battles of the Revolutionary war were at ________ and ________. http://www.americanrevolution.com/RevolutionaryWarBattlesIndex.htm Be sure to scroll down. =)

*asked by help!!! on October 5, 2006* -
## english

The students in the back of the room were talking so ________ that I couldn't concentrate ________ on my assignment. Question 2 options:

*asked by cassie on February 26, 2018* -
## English

Either Chris or the new employee ________ the mail before Dolores or Charles ________.

*asked by Anonymous on January 19, 2017* -
## english

None of the students ________ happy with the instructor because she ________ homework every weekend.

*asked by Anonymous on October 28, 2016* -
## English

Either Chris or the new employee ________ the mail before Dolores or Charles ________.

*asked by Anonymous on January 31, 2017* -
## Technical writing

Either Chris or the new employee ________ the mail before Dolores or Charles ________.

*asked by Angelica on November 23, 2015* -
## 11th grade

Find the lowest common denominator of the rational expression: 1/m = (m-34) / 2m squared

*asked by Brandon on November 17, 2010* -
## History

35. The Neutrality Acts of 1939 included this component, ________ and ________, which helped Americans support the Allies with supplies.

*asked by Seth on February 13, 2019* -
## math,correction please..

(x)/(x-2) - (x+1)/(x) = (8)/(x^2-2x) I keep getting x = 6 can someone show me how you guys are getting x = -10 The lowest commond denominator is x(x-2) x/x *(x)/(x-2) - (x+1)/(x) *(x-2)/(x-2)=(8)/x(x-2) multiplying both sides by the common denominator..

*asked by jas20 on March 7, 2007* -
## Math

Repeating decimals are ________ rational numbers. A. sometimes B. never C. always

*asked by Potato on September 22, 2017* -
## Finite Math

Let A and B be two events in a sample space S such that P(A) = 0.5, P(B) = 0.6, and P(A intersection B) = 0.15. Find the probabilities below. Hint: (A intersection Bc) union (A intersection B) = A. (a) P(A|Bc) ________ (b) P(B|Ac) ________

*asked by Seth on November 20, 2014* -
## algebra

a] 6x =______ x _______ b]9x means _______ groups of ________ c]14 group of x is ________ d]18m = ________ x ________ e]75y means ______ groups of ______. f]12 groups of y is _________ .

*asked by fatimah on September 25, 2017* -
## Spanish

El alumno o el profesor? complete each sentence with the appropriate word. 1. En una escuela americana "A" es una nota ________ y "f" es una nota ________. 2. El profesor_________; el alumno ________ la pizarra. i think number 1 is buena & mala but im not

*asked by jessica on October 19, 2010* -
## science

scientists ______ a hypothesis by doing one or more of these steps: designing a ________, making a ________, gathering and _________ evidence, __________ data, or recording observations.

*asked by billy on October 4, 2018* -
## Algebra II

I have some questions on my assignment, if you don't mind could you look over my answers. thanxs! Find all the numbers that must be excluded from the domain of the rational expression. x+8/x^2-16, my answer: x cant be -4 or 4 x-3/x^2+11x+24, my answer: x

*asked by Jesse on August 13, 2007* -
## college physics

Light may be considered to travel as a ________ or a ________.

*asked by Cristina on July 31, 2010* -
## Psycology

Behavior is ________ while mental processes are ________.

*asked by Anonymous on January 21, 2012* -
## algebra 2

x2 + 2x – 10/ 3x – 15 Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. Find the domain for each of your two rational expressions. Write the domain of each rational expression in set notation (as

*asked by peaches on July 11, 2016* -
## algebra 2

16t^2 – 1/64 Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. Find the domain for each of your two rational expressions. Write the domain of each rational expression in set notation (as demonstrated

*asked by peaches on July 11, 2016* -
## Algebra ll

X^2 - 25/2 AND 37/K^2-K-30 I really need help with these two problems.? •Explain in your own words what the meaning of domain is. Also, explain why a denominator cannot be zero. •Find the domain for each of your two rational expressions. •Write the

*asked by Anonymous on October 2, 2014* -
## health

8. ________ is the most common and preventable chronic disease in childhood. (1 point) The common cold Cystic fibrosis Hypertension Dental caries

*asked by stacey on September 3, 2014* -
## Psychologic

Dacher and Emiliana suggest that compassion can be defined as: The feeling a person has in the presence of ________, is coupled with an urge to ________. sadness, cry pain, escape anger, fight suffering, help

*asked by zxcv on October 26, 2014* -
## science

i need help at these. thx 1.the statement, " all living things are made of cells" is an example of _______. 2. a controlled experiment helps to eliminate the effects of unwanted ________. 3. ________ science emphasizes inquiry and observation.

*asked by jen on September 24, 2010* -
## Chemistry

At 25°C, K = 0.090 for the following reaction. H2O(g) + Cl2O(g) equilibrium reaction arrow 2 HOCl(g) Calculate the concentrations of all species at equilibrium for the following case. 1.3 mol pure HOCl is placed in a 1.6 L flask [HOCl]________

*asked by Ann on February 27, 2012* -
## math

what is the third term necessary to make this a perfect square trinomial? what is the binomial quantity squared it is equivalent to? x^2 - 9x _______= (________)^2 x^2 + 10x _______= (________)^2

*asked by lauren on April 21, 2016* -
## maths

the denominator of a rational number is greater than the numerator by 6. if the numerator is decreased by 2 and the denominator is increased by 4 . the rational is 1/5 .Find the rational number.

*asked by kratika on June 13, 2012* -
## maths

the denominator of a rational number is greater than the numerator by 6. if the numerator is decreased by 2 and the denominator is increased by 4 . the rational is 1/5 .Find the rational number.

*asked by kratika on June 13, 2012* -
## maths

the denominator of a rational number is greater than the numerator by 6. if the numerator is decreased by 2 and the denominator is increased by 4 . the rational is 1/5 .Find the rational number.

*asked by kratika on June 13, 2012* -
## Algebra

y = ax, has asymptote ________ and y-intercept ________.

*asked by Connor on May 5, 2013* -
## science

1) Science is the ______ of temperature 2) a ________ is used to measure temperature. 3) ice is ____ dense than water 4) adding heat to a ________ increases the the motion of molecules

*asked by Crystal on May 1, 2011* -
## vocab.

1. The lake's reflection usually creates a glare, but now the surface is _________. murky 2. Sad sounds of his ______ show how much he regrets the tragedy. lament 3. When prey is scarce, a carnivore will ________ whenever it can. gorge 4. The warriors

*asked by anonymous on November 27, 2007* -
## English

Can someone please confirm the following? 1. The yellow house down the street from me is for sale. (Down is underlined) a. preposition b. conjunction c. adjective d. adverb I think #1 is A, or C. 2. A pregnant person knows how difficult it is to get in and

*asked by Heather on May 18, 2018* -
## math

Use polynomial long division to find the quotient and the remainder when 2x 3 +x 2 +3x−1 is divided by x+4 . Also, check your answer by showing that 2x 3 +x 2 +3x−1 is equal to x+4 times the quotient, plus the remainder. B. dividend = quotient x

*asked by Anonymous on October 30, 2015* -
## Chemistry

A dime is found to have a mass of 2.33 grams. Using unit analysis, show what the mass of this dime is in kilograms. 2.33 grams x ________ _______ (number) (unit) ________________________________________________ ________ ________ (number) (unit) = ? ___ kg

*asked by Anonymous on July 3, 2017* -
## algebra

Solve for x x/6-x/8 equals 1 Do fraction busters Find the least common denominator, which is 24. Change the fractions to where they have the same denominator. Change 1 to equal 24/24, and solve. Did this help? x/6 + x/8 = 1 multiply each term by 24, the

*asked by Tony on April 24, 2007* -
## Science-8th Grade

5. Volume is an object is how much ________ it takes up. 6. When we measure the temperature of an object in the metric system, we use _______ 7. Scientist say that measuring mass of an object means measuring how much matter something has. What is matter?

*asked by Joy on September 29, 2008* -
## math

subtract: express your answer in simplest form. 5x-3/6 - (x+3)/6 answer choices a) 4x-1 b) 2x-3/3 c) 2x/3 -1 d) 2x/3 show me hou to arrive at the correct answer get a common denominator. get a common denominator. I thought 6 was the common denominator, why

*asked by Diana on July 15, 2007* -
## spainsh 2

Provide the correct form of the conditional tense for the regular verbs in thefollowing sentences: 1. Si yo tuviera hambre, ________ (comer.) 2. Si el bebé tuviera sueño, él _______ (dormir.) 3. ¿Qué te _______ (gustar) pedir? 4. Me _________ (gustar)

*asked by Alexus on January 2, 2013* -
## social studies

I need help on these questions: John ________, (John) Adams And Paul Revere were all leaders of the ________ ____ _________. To help fight the colonists, King George III hired ___________ from ____________.

*asked by Celest on January 28, 2013* -
## SAT math

True or False: The least common denominator of each denominator in the following rational expression is -2(x-3)(x-1) : 8 / x^2-4x+3 = 1 / 3-x + 1 / 2 FALSE? True or False: The least common denominator of each denominator in the following rational

*asked by mysterychicken on May 31, 2013* -
## Calculus Please Help

A) If x^2+y^3−xy^2=5, find dy/dx in terms of x and y. dy/dx=________ B) Using your answer for dy/dx, fill in the following table of approximate y-values of points on the curve near x=1 y=2. 0.96 ______ 0.98 ______ 1.02 ______ 1.04 ______ C) Finally, find

*asked by Catherine on March 15, 2011* -
## math

A) If x^2+y^3−xy^2=19, find dy/dx in terms of x and y. dy/dx=________ B) Using your answer for dy/dx, fill in the following table of approximate y-values of points on the curve near x=1 y=3. 0.96 ______ 0.98 ______ 1.02 ______ 1.04 ______ C) Finally,

*asked by lauren on October 23, 2014* -
## java

can anyone help me with this? I'm new to java! Write a program that will find the lowest common denominator of two numbers. The user will enter the two denominators, the program will output both the lowest common denominator and the multipliers required

*asked by Anonymous on April 7, 2012* -
## java

Write a program that will find the lowest common denominator of two numbers. The user will enter the two denominators, the program will output both the lowest common denominator and the multipliers required for each fraction. For example, if the user is

*asked by tj on April 15, 2012* -
## Math

26 x 1/5 divided by 1/2 x 5. evaluate. I don't know if i'm supposed to find a common denominator and if i should use 10 as the common denominator.

*asked by Kiesha on August 24, 2009* -
## Math

Ok so I totally forgot how to find a common denominator when your adding fractions, could someone please tell me the steps to do that? :) multiply. Multiply the denominators together and this gives the new denominator. Divide each denominator into the new

*asked by Kaitlin S. on April 12, 2007* -
## math

(X^2-1)/(x-1) = (x+1)(x-1)/(x-1) = x+1. If you then subtract your original number, x, you are left with 1. The reason this doesn't work with 1 is that you would have 1-1=0 in the denominator and you cannot divide by zero. This uses the skill of simplifying

*asked by Anonymous on November 4, 2008* -
## Rational Expression

(x+1/2x-1 - x-1/2x+1) * (2x-1/x - 2x-1/x^2) (x+1/2x-1 - x-1/2x+1)*(2x-1/x - 2x-1/x^2) The first parenthesis reduces to zero. Check that. I have the answers in the back of my book (just not how to get there) the book shows the answer as 6(x-1)/x(2x+1). When

*asked by Mandi on October 16, 2006* -
## Algebra

In the slideshow, Multiplication of rational expressions, located in Chapter 6, the answer results in x in the numerator and x – 5 in the denominator. True or False

*asked by Melissa on August 10, 2015* -
## Algebra

Find the LCD for the given rational expressions, and convert each rational expression into an equivalent rational expression with the LCD as the denominator. 3 5 ----, ---- 84a 63b 4b 6 -----, ---- 75a 105ab Can someone here help me I do not understand

*asked by Angel007 on August 7, 2005* -
## economics

Assuming the inverse demand function for good Z can be written as P = 90 - 3Q, when Q is equal to 5, average revenue and marginal revenue are equal to ________ and ________. Choose one answer. a. $75; $75. b. $75; $60. c. $60; $60. d. $85; $85.

*asked by ammu on July 28, 2011* -
## Math

I was wondering if I solved these problems right? Simplify the following: 3xy^2 4xz ______ + ______ = 7xyz 2y 3x _____ 5 2(x-1) 3(x^2-4) ______ * ________ = 6(x-2) 4(x+2) 5x-5 ______ 20 x^2-x-6 3(x^2-4) ________ / __________ = (x-3) (x+5) 7x+7 x^2+6x+5

*asked by Sara on June 13, 2011* -
## Help1

WHY rational expressions that are being added must have an LCD, but rational expressions that are being multiplied do not need to have an LCD. The short answer is that addition and multiplication are different operations with different properties. If we

*asked by Allen on October 13, 2006*

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