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5 January, 09:40

Write the equation y = (x-4) (x+2) in standard form

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  1. 5 January, 11:58
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    y = x² - 2x - 8

    Step-by-step explanation:

    Given

    y = (x - 4) (x + 2)

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

    x (x + 2) - 4 (x + 2) ← distribute parenthesis

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

    = x² - 2x - 8 ← in standard form
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