SOLUTION: Each side of a square is increased by 3 cm, increasing its are by 39cm(squared). Find the dimensions of the original square. I know that each side of a square increased by 3c

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Question 244333: Each side of a square is increased by 3 cm, increasing its are by 39cm(squared). Find the dimensions of the original square.

I know that each side of a square increased by 3c, is 64m(squared).
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
(s + 3)^2 = s^2 + 39

FOILing ___ s^2 + 6s + 9 = s^2 + 39

subtracting (s^2 + 9) ___ 6s = 30

dividing by 6 ___ s = 5