SOLUTION: Simplify: ^y+y-20/^y-2y-8. Assume that the denominator is not equal to 0. I tried very hard to do this on my own but I just can't seem to make any sense out of it.

Algebra ->  Equations -> SOLUTION: Simplify: ^y+y-20/^y-2y-8. Assume that the denominator is not equal to 0. I tried very hard to do this on my own but I just can't seem to make any sense out of it.      Log On


   

Question 98461: Simplify:
^y+y-20/^y-2y-8. Assume that the denominator is not equal to 0. I tried very hard to do this on my own but I just can't seem to make any sense out of it.
Answer by 303795(602) About Me  (Show Source):
You can put this solution on YOUR website!
Assuming that the problem is
%28y%5E2%2By-20%29%2F%28y%5E2-2y-8%29
Factorise the top and bottom expressions.
%28%28y%2B5%29%28y-4%29%29%2F%28%28y%2B2%29%28y-4%29%29
The denominator could not be zero so y can't be 4 or -2.
Cancel out the common factor.
%28%28y%2B5%29cross%28y-4%29%29%2F%28%28y%2B2%29cross%28y-4%29%29
%28y%2B5%29%2F%28y%2B2%29