SOLUTION: Factor the binomial. 25x squared - 81y squared

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Question 114518: Factor the binomial.

25x squared - 81y squared
Answer by checkley71(8403) About Me  (Show Source):
You can put this solution on YOUR website!
TO FACTOR THE DIFFERENCE OF 2 SQUARES YOU TAKE THE SUM & THE DIFFERENCE OF THEIR SQUARE ROOTS.
25X^2-81Y^2
(5X+9Y)(5X-9Y) ANSWER.
PROOF
5X+9Y
5X-9Y
----------------------------
25X^2+45XY-45XY-81Y^2
25X^2-81Y^2