SOLUTION: The length of each side of a square is extended 2 inches. The area of the resulting square is 144 square inches. Find the length of the side of the original square.
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Question 582614: The length of each side of a square is extended 2 inches. The area of the resulting square is 144 square inches. Find the length of the side of the original square.
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
(x+2)^2 = 144
x^2+4x+4=144
x^2+4x+4-144=0
x^2+4x-140
(x+14)(x-10)=0
x+14=0 or x-10=0
x=-14 or x=10
Ignore the negative solution.
So the length of the side of the original square is 10 inches.
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