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12 February, 22:19

Distribute: x (x) + x (4) - 5 (x) - 5 (4) = x (x) + x (-3).

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  1. 12 February, 23:46
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    x = 10

    Step-by-step explanation:

    x (x) + x (4) - 5 (x) - 5 (4) = x (x) + x (-3)

    x² + 4x - 5x - 20 = x² - 3x

    Collect like terms

    x² - x² + 4x - 5x + 3x - 20 = 0

    2x = - 20

    Divide through by 2

    X = 10
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