Perform the indicated operations:?

2√[72] + √[32] – 4√[18]

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  • aeiou
    Lv 7
    1 decade ago
    Favorite Answer

    2√[72] + √[32] – 4√[18] =

    2*6√2 + 4√2 – 4*3√2 =

    12√2 + 4√2 – 12√2 = 4√2

    The answer is 4√2

    ::

  • 1 decade ago

    First: simplify each square root: break them down (72, 32, 18)

    Second: solve according to order of operations:

  • 1 decade ago

    The answer is 4*root of 2

  • 1 decade ago

    =2*2*sqrt18+4sqrt2-4sqrt18

    =4sqrt2

    =4*1.414

    =5.6568

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  • 1 decade ago

    2sq(72)+sq(32)-4sq(18)

    2*sq(9*8) +sq(8*4)-4sq(9*2)

    2*sq(3*3*2*2*2)+sq(2*2*2*2*2)-4sq(3*3*2)

    2*3*2sq(2)+2*2sq(2)-4*3sq(2)

    12sq(2)+4sq(2)-12sq(2)

    =4sq(2)

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