SOLUTION: please multiply and simplify (a-3)(a+3) thanks

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Question 192623: please multiply and simplify

(a-3)(a+3)

thanks
Answer by RAY100(1637) About Me  (Show Source):
You can put this solution on YOUR website!
(a+3)(a-3)
use FOIL
a^2 -3a+3a-9
or a^2 -9
this is commonly called difference of squares