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if the sides of a square are increased by 3m,the area becomes 64m2. find the length of a side of the original square



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[tex]a-the\ length\ of\ a\ side\ of\ the\ original\ sqare\\\\(a+3)^2=64\Rightarrow a+3=\sqrt{64}\\\\a+3=8\\\\a=8-3\\\\a=5\ (m)\leftarrow solution[/tex]

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