I don’t really understand this and it is on a test;
w-4/w-9 – w+1/w+9 + w-99/w^2 – 18 =

Can anyone give me a hint...please

  1. 👍
  2. 👎
  3. 👁
  1. Are you sure the last denominator isn't w^2 - 81? You get a simpler answer if is is, becasue it happens to be the lowest common denominator.

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. APChem

    Hi I tried to understand this but I don't know why the answer is B: Which one of the following pairs cannot be mixed together to form a buffer solution: A) NaC2H3O2, HCl B)RbOH, HBr C) NH3, NH4Cl D) H3PO4, KH2PO4 E) KOH, HF The

  2. Math

    Select all possible values for x in the equation. x cubed=375. 5*the cubed root of 3 the cubed root of 375 75*the cubed root of 5 125*the cubed root of 3 I am trying to do a practice test to prepare for my real test tomorrow and I

  3. Social Studies

    The Roman and Byzantine Empires Unit Test i really need help my grades are not that good i don't understand it plz help.

  4. surface area and volume

    I really need some help, I don't fully understand. Exspecially with fractions, don't know how to enter them on calculator. 1. What is the approximate volume of the sphere? 524 m³ (my choice) 1,000 m³ 1,256 m³ 1,570 m³ 2. What


    CALCULATE THE pH AND HYDROLYSIS IN 0.10 M AlCl3 SOLUTION.Ka = 1.2 X 10-5 FOR [Al(OH2)6]+3,OFTEN ABBREVIATED Al+3.TELL WHETHER pH IS ACID OR BASE.GIVE IONIC EQUATION. Help us a little by telling us how much you know to do and

  2. Science! HELP!!!!!!

    If someone can give all the answers to Lesson 9: Chemical Reactions Unit Test, I will give ALL the answers to a test YOU don't understand! Thank you!

  3. Social Studies!!! 😳

    I need help on the Sectionalism and the Civil War Test from connexus academy I don’t understand anything I know this is asking for a lot but can someone please give me the answers 🤧🙏

  4. social studies

    Lesson 9: Unit Test Social Studies 8 A Unit 4: A Constitution for the United States I NEED HELP i don't understand.

  1. Social studies

    Lesson 13 Civics unit test social studies I'm having troubles I'm not understanding question 1 through 31. Someone please help each other emergency I don't understand this and I have to get an A or my mom is canceling Christmas

  2. Math ( Percents as Ratios)

    Sue receives a test score of 75% on a test with 20 questions. How many did she get correct? 👉 I need help making these kinds of questions into proportions because I have a Benchmark Test (like a mid year test) coming up & I

  3. chemistry

    I know how to use the equations pv=nrt and P1xV1/n1xT1 = P2xV2/n2xT2, but I don't understand when to use them. I have a test tomorrow and I'm going over some word problems, but I can't figure out how decide which formula you need

  4. Chemistry

    What is wrong with or ambiguous about the phrase "four molecules of NaCl" I really don't understand my textbook says in the back that it is an ionic compound so I guess that its not really a molecule then I don't understand...

You can view more similar questions or ask a new question.