SOLUTION: Squared sides are lengthened by 7 cm. The area becomes 225cm squared. Find the length of a side of the original square.
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-> SOLUTION: Squared sides are lengthened by 7 cm. The area becomes 225cm squared. Find the length of a side of the original square.
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Question 311588: Squared sides are lengthened by 7 cm. The area becomes 225cm squared. Find the length of a side of the original square. Answer by checkley77(12844) (Show Source):
You can put this solution on YOUR website! (x+7)^2=225
x^2+14x+49=226
x^2+14x+49-225=0
x^2+14x-176=0
(x-8)(x+22)=0
x-8=0
x=8 ans. for the length of the original side of the square.
Proof:
(8+7)^2=225
15^2=225
225=225
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