SOLUTION: how to multiply (a^2 + 8a +15 / a^2 + 7a +12)(3a +12 / a^2 - 25) ??

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Question 914320: how to multiply (a^2 + 8a +15 / a^2 + 7a +12)(3a +12 / a^2 - 25) ??
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
......multiply numerator by numerator, and denominator by denominator

...factor all terms
first

3a+%2B12=3%28a%2B4%29


a%5E2+-+25=a%5E2-5%5E2=%28a-5%29%28a%2B5%29
now substitute all:
...reduce



+3+%2F%28a-5%29