Post a New Question

Math

posted by .

x^2-x-12/x^2-3x-4*x^2-1/x^2+2x-3

Please help me solve, I am desperate!

  • Math -

    When simplifying rational expressions you need to factor all the numerators & denominators (if possible):
    x^2-x-12 --> (x-4)(x+3)
    x^2-3x-4 --> (x-4)(x+1)

    x^2-1 -----> (x+1)(x-1)
    x^2+2x-3 --> (x+3)(x-1)

    Therefore you will have:
    (x-4)(x+3)*(x+1)(x-1)
    (x-4)(x+1) (x+3)(x-1)

    You can then cancel out all common factors that appear on top and bottom. If you notice, for every factor on top, there is a match on the bottom. THus, everything cancels out leaving you with a final answer of 1!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    The equation d =70t represents the distance in miles covered after traveling at 70 miles per hour for t hours.....what is d when t = 2.5?
  2. Algebra

    Rationalize the denominator. Assume that all variables are positive. 5x^4y/2x^2y^3 There are square root signs around both parts of the fraction, but I cannot make them on the computer. Thanks in advance. are u using the carrot symbols …
  3. please

    someone please help with the physics question i asked a little bit ago, i'm desperate
  4. math

    Can somebody PLEASE help me understand how to find the domain of a function. I have an F in algebra 3 and just got a 50% on my math quiz. I'm desperate!
  5. Algebra desperate

    Solve the following inequality. (x-4)/(-x+2)>0 Write your answer using interval notation
  6. I'm in desperate need of h

    I'm in desperate need of help for a huge titration lab and finding the molarity. if I give you the problem could you help?
  7. Math help

    How would you solve these systems by elimination?
  8. Math Help

    In desperate need of help! solve by factoring. 1. x^2=-25+10x 2. 2x^2+9x=5 3. The length of a square is 4x-3. Find the area in terms of x.
  9. MATH HELP

    In desperate need of help! solve by factoring. 1. x^2=-25+10x 2. 2x^2+9x=5 3. The length of a square is 4x-3. Find the area in terms of x.
  10. POLS210 D001

    Please I am in desperate need of finding the answer to pop quiz 4,6,and 8 please is there anyone out there that could help me.

More Similar Questions

Post a New Question