Asked by Anon

((25/a)- a)/ (5 + a)

I know the answer comes to (5-a)/a but I can't figure out how to simplify it to this. I've gotten close but I'm not sure. Its probably easier than I'm making it out to be.
Answered by Quidditch
Try multiplying by a/a.
Answered by Reiny
easiest way.....
multiply top and bottom of the main fraction by a to get
(25-a^2) / (a(5+a) )
= (5+a)(5-a)/(a(5+a) )
= (5-a)/a
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