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30 September, 23:04

Simplify (x - 4) (x2 + 3x - 1).

A. x^3-x^2+11x+4

B. x^3-x^2-13x+4

C. x^3+7x^2+11x+4

D. x^3+7x^2-13x+4

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Answers (1)
  1. 30 September, 23:16
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    (x - 4) (x2 + 3x - 1)

    = x^3 + 3x^2 - x - 4x^2 - 12x + 4

    = x^3 - x^2 - 13x + 4

    answer is B. x^3-x^2-13x+4
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