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March 28, 2017

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(x + 3)(x^2 – 2x + 7)

  • Math - ,

    =x(x^2 – 2x + 7) +3(x^2 – 2x + 7)
    distributive property

  • Math - ,

    x(x^2 – 2x + 7)+3(x^2 – 2x + 7)
    = x^3-2x^2+7x + 3x^2-6x+21
    = x^3-2x^2+3x^2+7x-6x+21
    = x^3+x^2+x+21 ---- this is the answer

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