SOLUTION: Please help me solve this problem. c/d +2 _________ c^2/d^2 -4

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Question 368351: Please help me solve this problem.
c/d +2
_________
c^2/d^2 -4
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Substitute, let u=c%2Fd, u%5E2=c%5E2%2Fd%5E2
%28c%2Fd%2B2%29%2F%28%28c%2Fd%29%5E2-4%29=%28u%2B2%29%2F%28u%5E2-4%29
%28c%2Fd%2B2%29%2F%28%28c%2Fd%29%5E2-4%29=%28u%2B2%29%2F%28%28u%2B2%29%28u-2%29%29
%28c%2Fd%2B2%29%2F%28%28c%2Fd%29%5E2-4%29=1%2F%28u-2%29
%28c%2Fd%2B2%29%2F%28%28c%2Fd%29%5E2-4%29=1%2F%28c%2Fd-2%29
%28c%2Fd%2B2%29%2F%28%28c%2Fd%29%5E2-4%29=highlight%28d%2F%28c-2d%29%29