SOLUTION: If the sides of a square are decreased by 2 cm, the area is decreased by 36 cm2. What were the dimensions of the original square?

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Question 107401: If the sides of a square are decreased by 2 cm, the area is decreased by
36 cm2. What were the dimensions of the original square?
Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
(X-2)^2=X^2-36
X^2-4X+4=X^2-36
-4X=-36-4
-4X=-40
X=-40/-4
X=10 CM THE ORIGINAL DIMENSION OF THE SQUARE.
PROOF
(10-2)^2=10^2-36
8^2=100-36
64=64