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Mathematics 17 Online
OpenStudy (anonymous):

principal square root of 81

OpenStudy (anonymous):

9

OpenStudy (anonymous):

i put that and it was wrong

OpenStudy (anonymous):

what???

OpenStudy (anonymous):

must be some new math

OpenStudy (anonymous):

I just looked it up on Wolfram, and it says that the PRINCIPAL square root of 81 = 9 That's weird...

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