SOLUTION: If the length of a square is increased by 10 m and the width by 5 m, the area of the new rectangle is three times the area of the square . What was the area of the square?If

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Question 979531: If the length of a square is increased by 10 m and the
width by 5 m, the area of the new rectangle is three
times the area of the square . What was the area of
the square?If the length of a square is increased by 10 m and the
width by 5 m, the area of the new rectangle is three
times the area of the square . What was the area of
the square?

Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
x, the original length of side of square.

Rectangle formed, %28x%2B10%29%28x%2B5%29=3x%5E2, and you want to find x and x%5E2.

3x%5E2-x%5E2-15x-50=0

2x%5E2-15x-50=0----Continue from here.

...
highlight%28x=10%29