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put this solution on YOUR website!square root of 72 = 8.48528... per calculator, to solve manually: 9 * 8 = 72 = 9 is a perfect square so the equation becomes 3 sq rt 8 but then 8 breaks down to 4 * 2 and 4 is a perfect square so take 3 * 2 = 6 sq rt 2
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