SOLUTION: Please help. factor out GCF a(a+1) - 3(a+1)

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Question 175612: Please help.
factor out GCF
a(a+1) - 3(a+1)
Answer by Mathtut(3670) About Me  (Show Source):
You can put this solution on YOUR website!
a%28a%2B1%29-3%28a%2B1%29 see those (a+1) terms!! we are going to factor those out of the two terms of our expression.
:
%28a%2B1%29%28a-3%29 there you have it.