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math

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simplify (8-0.02)^2 divided by 2+8.3*0.4

  • math -

    ( a - b ) ^ 2 = a ^ 2 - 2 a b + b ^ 2


    ( 8 - 0.02 ) ^ 2 = 8 ^ 2 - 2 * 8 * 0.02 + 0.02 ^ 2 =

    64 - 0.32 + 0.0004 = 63.6804


    2 + 8.3 * 0.4 = 2 + 3.32 = 5.32


    ( 8 - 0.02 ) ^ 2 / ( 2 + 8.3 * 0.4 ) =

    63.6804 / 5.32 = 11,97

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