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OpenStudy (meilendurcer):
an estimate for -sqrt 72 is?
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OpenStudy (mathstudent55):
sqrt(81) = 9 sqrt(64) = 8 sqrt(72) = 8.5 approximately, so -sqrt(72) = -8.5 approximately
OpenStudy (meilendurcer):
yay i got it right..
OpenStudy (mathstudent55):
good
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