SOLUTION: 3a+9/a*a^2/a^2-9 Find the product

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Question 137620: 3a+9/a*a^2/a^2-9 Find the product
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!
I presume your expression was this: %28%283a%2B9%29%2Fa%29%2A%28a%5E2%2F%28a%5E2-9%29%29

Factor the numerator of the first fraction:
%28%283%28a%2B3%29%29%2Fa%29%2A%28a%5E2%2F%28a%5E2-9%29%29

And the denominator of the second fraction:
%28%283%28a%2B3%29%29%2Fa%29%2A%28a%5E2%2F%28%28a%2B3%29%28a-3%29%29%29

Now eliminate common factors from numerator and denominator:
%283%2F1%29%28a%2F%28a-3%29%29

Multiply numerator times numerator and denominator times denominator, just like any two fractions that are multiplied:
3a%2F%28a-3%29

Done.