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OpenStudy (ledah):
simplify sqrt(90)
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OpenStudy (cwrw238):
look for perfect squares in factors of 90: 90 = 2*3*3*5 can you pick out a perfect square?
OpenStudy (cwrw238):
3* 3 = 9 right?
OpenStudy (ledah):
3 is my guess
OpenStudy (cwrw238):
so sqrt 90 = sqrt( 9 * 10) = sqrt9 * sqrt10 = 3 sqrt10
OpenStudy (ledah):
meaning my answer would look like? |dw:1342545357435:dw|
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OpenStudy (cwrw238):
yes
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