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OpenStudy (mary.rojas):
√90 can be written as c√d , where d has no perfect square factors and c and d and are both integers. Which of the following are equivalent to : d-c a. 1 b. 7 c. 13 d. 15 e. 19
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OpenStudy (anonymous):
90 = 2 x 45 = 2 x 5 x 9 sqrt 90 = sqrt (2x5 x9) = 3 sqrt (10)
OpenStudy (mary.rojas):
is it "b" ... 7 ?
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