SOLUTION: If two opposite sides of a square are increased by 10 meters and the other sides are decreased by 2 meters, the area of the rectangle that is formed is 85 square meters. Find the a

Question 1121944: If two opposite sides of a square are increased by 10 meters and the other sides are decreased by 2 meters, the area of the rectangle that is formed is 85 square meters. Find the area of the original square.
Answer by josgarithmetic(39621) (Show Source): You can put this solution on YOUR website!
x, length of side of original square

You can use algebra if you want to --- quadratic equation.

Alternatively, note that the two factors differ by 12. Can you find two factor whose difference is 12 and whose product is 85?
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