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4 March, 19:35

Determine if each root is a rational or irrational number. Explain your reasoning. a.√36 b.√78

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  1. 4 March, 22:44
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    a) rational

    b) irrational

    Step-by-step explanation:

    a) 36 = 6²

    So sqrt (36) = 6

    b) 72 = 2 * 36

    sqrt (72) = sqrt (2) * sqrt (36)

    Since 2 is not a perfect square, sqrt (72) is irrational
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