SOLUTION: If the sides of a square are lengthened by 8cm, the area becomes 144cm^2 find the length of a side of the original square. I could use some help with this.

Question 285431: If the sides of a square are lengthened by 8cm, the area becomes 144cm^2
find the length of a side of the original square.
I could use some help with this.
Found 2 solutions by nyc_function, scott8148:
Answer by nyc_function(2741) (Show Source): You can put this solution on YOUR website!
Let x = side of original square.
Let x + 8 = side of new square.
The area is found using A = side times side.
(x + 8)^2 = 144
Can you finish now?
All you need to do is find x.

Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
(x + 8)^2 = 144

x + 8 = 12

x = 4
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