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20-02-2019
Mathematics

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what is the square root of 40 (need help ugghghgghh)

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jimthompson5910 jimthompson5910

20-02-2019

"sqrt" is shorthand for "square root"

The rule to use is

sqrt(x*y) = sqrt(x)*sqrt(y)

Factor 40 into 4*10, then use the rule above to get the following

sqrt(40) = sqrt(4*10)

sqrt(40) = sqrt(4)*sqrt(10)

sqrt(40) = 2*sqrt(10)

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