BobPursley3...another one..

Problem 3:
4x/(x+2) - 8/(x-1)
What I did:
Common denominator is: (x+2)(x-1)

4x(x-1)/(x+2)(x-1) - 8(x+2)/(x+2)(x-1)
[4x(x-1) - 8(x+2)]/(x+2)(x-1)



multiply the numerator out.
4x^2 -4x -8x-16
4x^2-12x-16 factor 4 out
4(x^2-3x-4)
factor
4(x-4)(x+1)
and that will reduce over the denominator.

  1. 👍 0
  2. 👎 0
  3. 👁 88
asked by Margie

Respond to this Question

First Name

Your Response

Similar Questions

  1. 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

    asked by jas20 on March 7, 2007
  2. HELP MATH

    how would u simplify this problem i think it is 60 --- x^6 am i right the problem is 5 4 3 _ + ___ - ___ x x^2 x^3 I'm going to assume your problem is this: 5/x + 4/x^2 - 3/x^3 To simplify, find a common denominator, which is x^3

    asked by cassii on August 8, 2006
  3. Math2(Please Help)

    4x 8 ___ - ______ x+2 x-1 *Simplify The Expression I'm going to assume your problem is this: 4x/(x+2) - 8/(x-1) Use a common denominator since the denominators are not the same. Common denominator is: (x+2)(x-1) Rewriting the

    asked by Margie on March 3, 2007
  4. Algebra

    Please explain to me how to do these problems...Thanks 1. Find the value of x...x/6-x/8=1 2. The combined resistance of two resistors r1 and r2 in a parallel circuit is given by the formula rt= 1/(1/r1)+ (1/r2)...simplify the

    asked by Algebra Help on May 23, 2007
  5. Math(Please Help)

    x-2 6x ____ - _____ 3x+4 x+1 *You are supposed to simplify the expresion.I really need help with this and some other problems.Please and Thank you.- Perhaps I could help but I can't make heads or tails of your posts. Try using

    asked by Margie on March 3, 2007
  6. Algebra

    x/(x-3)-4-(2x-5)/(x+2) If the problem is this: x/(x - 3) - 4 - (3x - 5)/(x + 2) ...find a common denominator to start. The common denominator is (x - 3)(x + 2), then convert each term using the common denominator. Here's a start:

    asked by Sara on July 19, 2007
  7. bobPursley2...the other one

    Problem 2: (x+2)/(2x^2+5x+2) - (x-3)/(2x^2-5x-3) What I did: 2x^2+5x+2 factors are (2x+1)(x+2) 2x^2-5x-3 factors are (2x+1)(x-3) Then: (x+2)/(2x+1)(x+2) - (x-3)/(2x+1)x-3) So the common denominator is (2x+1)(x+2)(x-3) using that

    asked by Margie on March 4, 2007
  8. Math

    I still do not understand fractions?????? 2/3 + 1/3 + 5/6 = divide all of them first then add them up ???. I am still lost, can someone please help me. Ok. In your earlier question, there was talk of the LCM, the least common

    asked by Andre on March 21, 2007
  9. 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

    asked by Diana on July 15, 2007
  10. Math

    I don't get what the problem is asking? "Which of the following shows the next step using the least common denominator simplify 7/8 - 5/6?" there's 4 answers, A. (7/8 x 3/3) - (5/6 x 4/4) B. (7/8 x 4/4) - (5/6 x 3/3) C. (7/8 x

    asked by Lea on April 20, 2010
  11. College Algebra 1

    help! 2x/1+x-1/1-x=2 Get a common denominator. As I see your problem (you did not use parenthesis), the common denominator will be (1+x)(1-x) Thank you!

    asked by Gabrielle on October 26, 2006

More Similar Questions