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  • Brainly User
2015-09-24T18:23:07+08:00

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Let original side be x
New side measurement increased by 7:  x + 7
New area: 189 sq inches

Area of square = s
²
189 = (x+7)²
189 = x² + 14x + 49

x
² + 14x + 49 -189 = 0

x
² + 14x - 140 = 0

Solve by quadratic formula. This can not be solved by factoring because it has no rational factors.

Please see attached handwritten solution :-)

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