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Mathematics 9 Online
OpenStudy (anonymous):

A square poster has sides measuring 2 feet less than the sides of a square sign. If the difference between the areas is 12 square feet, find the lengths of the sides of the poster and sign.

OpenStudy (mathstudent55):

|dw:1363904535393:dw| (x + 2)^2 - x^2 = 12

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