SOLUTION: Perform the indicated operations and simplify: 4x/x^2-16 - 3/x-4 4x over x^2-16 minus 3x over x-4 (sorry I do not know how to put the line under) So far I have f

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Perform the indicated operations and simplify: 4x/x^2-16 - 3/x-4 4x over x^2-16 minus 3x over x-4 (sorry I do not know how to put the line under) So far I have f      Log On


   

Question 1039140: Perform the indicated operations and simplify:
4x/x^2-16 - 3/x-4
4x over x^2-16 minus 3x over x-4
(sorry I do not know how to put the line under)
So far I have for the first one
(4x) over (x-4)(x+4) and the second one I have (3) over (x-4)
Thank you

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Perform the indicated operations and simplify:
4x/x^2-16 - 3/x-4
= 4x%2F%28%28x-4%29%2A%28x%2B4%29%29+-+3%2F%28x-4%29
Find a common denominator. (x-4)*(x+4) works.
= 4x%2F%28%28x-4%29%2A%28x%2B4%29%29+-+3%28x%2B4%29%2F%28%28x-4%29%2A%28x%2B4%29%29
= 4x%2F%28x%5E2-16%29+-+%283x%2B12%29%2F%28x%5E2-16%29
= %28x-12%29%2F%28x%5E2-16%29
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