SOLUTION: If the side of a square are decreased by 3cm, the area is decreased by 82cm^2. What were the dimensions of the original square?

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Question 377388: If the side of a square are decreased by 3cm, the area is decreased by 82cm^2. What were the dimensions of the original square?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2+-+%28x-3%29%5E2+=+82;
x%5E2+-+x%5E2%2B6x-9+=+82;
6x+=+91,
x+=+91%2F6 cm, the edge of the original square.