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math

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simplify the expression
3(x-2)-9(x^2+7x+4)-5(x+8)

  • math -

    first, get rid of the parens:

    3(x-2)-9(x^2+7x+4)-5(x+8)
    3x - 6 - 9x^2 - 63x - 36 - 5x - 40

    Now collect like powers of x:

    -9x^2 + (3-63-5)x + (-6-36-40)
    -9x^2 - 65x - 82

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