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18 July, 05:39

Combine and simplify these radicals. square root of 8 times square root of 20

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  1. 18 July, 06:02
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    Sqrt (8) = sqrt (2 * 2 * 2) = 2 sqrt (2)

    sqrt (20) = sqrt (2 * 2 * 5) = 2 sqrt (5)

    Now multiply

    2*sqrt (2) * 2 sqrt (5)

    = 2 * 2 * sqrt (2) * sqrt (5)

    = 4 sqrt (10)
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