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19 December, 19:00

If c (x) = 4x - 2 and d (x) = x2 5x, what is (cd) (x) ? 4x3 18x2 - 10x x2 9x - 2 16x2 4x - 6 4x2 20x - 2

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  1. 19 December, 20:48
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    the main formula is (cd) (x) = c (x). d (x)

    If c (x) = 4x - 2 and d (x) = x2 + 5x

    so (cd) (x) = (4x - 2) (x2 + 5x) = 4x^3+20x²-2x²-10x=4x^3+18x²-10x

    so the answer is A: 4x^3+18x²-10x
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