# Maths

find the square root off 12.25 by prime factorization

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1. multiply by 100. 1225
divide by 25: 45
divide by 9: 5

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2. hmm. I get
√12.25 = √(1225/100) = √(25*49/100) = 5*7/10 = 3.5

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posted by oobleck

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