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11 October, 11:24

Multiply (5x^2+x-4) (x+2)

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  1. 11 October, 13:29
    0
    5x³ + 11x² - 2x - 8

    Step-by-step explanation:

    Each term in the second factor is multiplied by each term in the first factor, that is

    5x² (x + 2) + x (x + 2) - 4 (x + 2) ← distribute the parenthesis

    = 5x³ + 10x² + x² + 2x - 4x - 8 ← collect like terms

    = 5x³ + 11x² - 2x - 8
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