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10 March, 11:38

What is the product of the polynomials below?

(7x2 + 5x + 7) (4x - 6)

A. 28x3 - 62x2 - 2x - 42

B. 28x3 - 22x2 - 58x - 42

C. 28x3 - 22x2 - 2x + 42

D. 28x3 - 22x2 - 2x - 42

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Answers (1)
  1. 10 March, 11:43
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    (7x2 + 5x + 7) (4x - 6)

    = 28x^3 - 42x^2 + 20x - 30x + 28x - 42

    = 28x^3 - 22x^2 - 2x - 42

    It's D
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