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7 September, 12:38

What is - 2 sqrt20 - sqrt125

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  1. 7 September, 14:45
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    -9sqrt (5)

    Step-by-step explanation:

    -2 sqrt20 - sqrt125

    Lets simplify the square roots

    sqrt (ab) = sqrt (a) sqrt (b)

    -2 sqrt (4) sqrt (5) - sqrt (25) sqrt (5)

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

    -4sqrt (5) - 5sqrt (5)

    -9sqrt (5)
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