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20 March, 18:04

Simplify: (x+7) (x-4)

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  1. 20 March, 18:31
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    x² + 3x - 28

    Step-by-step explanation:

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

    (x + 7) (x - 4)

    = x (x - 4) + 7 (x - 4) ← distribute both parenthesis

    = x² - 4x + 7x - 28 ← collect like terms

    = x² + 3x - 28
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