SOLUTION: How Do I Factor (a2-9)?

SOLUTION: How Do I Factor (a2-9)?

Algebra.Com

Question 3216: How Do I Factor (a2-9)?
Answer by mixerimaythyme(7) (Show Source): You can put this solution on YOUR website!
if by (a2-9) you mean (a^2-9) then listen up...
this one is very easy.
since this trinomial has no middle term, that means you need two numbers that add up to zero and multiply to -9...
the answer is...
(a-3)(a+3)...
thats that...
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