SOLUTION: Please help me with these problems 1. x^2-6x-7 __________ x^2 - 1 2. x^2 -3x + 2/ 8x -8 divide x^2 -4/5x + 10

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Please help me with these problems 1. x^2-6x-7 __________ x^2 - 1 2. x^2 -3x + 2/ 8x -8 divide x^2 -4/5x + 10       Log On


   

Question 156893: Please help me with these problems
1. x^2-6x-7
__________
x^2 - 1

2. x^2 -3x + 2/ 8x -8 divide x^2 -4/5x + 10
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Simplify:
1. %28x%5E2-6x-7%29%2F%28x%5E2-1%29 Factor the numerator and the denominator.
%28x-7%29highlight%28%28x%2B1%29%29%2F%28x-1%29highlight%28%28x%2B1%29%29 Cancel the indicated factors to leave you with:
%28x-7%29%2F%28x-1%29
-------------------
2. %28x%5E2-3x%2B2%29%2F%288x-8%29divided by%28x%5E2-4%29%2F%285x%2B10%29 Invert the second fraction and multiply:
%28%28x%5E2-3x%2B2%29%2F%288x-8%29%29%2A%28%285x%2B10%29%2F%28x%5E2-4%29%29 Factor the numerators and the denominators.
Cancel the indicated factors to leave you with:
5%2F8