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

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: How Do I Factor (a2-9)?      Log On


   

Question 3216: How Do I Factor (a2-9)?
Answer by mixerimaythyme(7) About Me  (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...