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13 April, 03:07

Simplify (x - 4) (x2 + 3x + 2).

x3 - x2 + 14x - 8

x3 + 7x2 - 10x - 8

x3 - x2 - 10x - 8

x3 + 7x2 + 14x - 8

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Answers (1)
  1. 13 April, 03:53
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    (x - 4) (x2 + 3x + 2)

    =x (x2 + 3x + 2) - 4 (x2 + 3x + 2)

    = (x3 + 3x2 + 2x) + (-4x2 - 12x - 8)

    = x3-x2-10x-8
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