Asked by shekyra nelvis
when the lenght of each side of a square is increased by 7in., its area is increased by 189in.^2. find the lenght of the side of the original square.
Answers
Answered by
Scott
(s + 7)² = s² + 189
s² + 14 s + 49 = s² + 189
14 s = 140
s² + 14 s + 49 = s² + 189
14 s = 140
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