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16 August, 01:34

Simplify the expression. Use standard polynomial format.

x (2x + 3) + (x - 3) (x - 4)

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  1. 16 August, 01:39
    0
    x (2x + 3) + (x - 3) (x - 4) = 3x² - 4x + 12

    Step-by-step explanation:

    Expand:

    x (2x + 3) : 2x² + 3x

    2x² + 3x + (x - 3) (x - 4)

    Expand:

    (x - 3) (x - 4) : x² - 7x + 12

    2x² + 3x + x² - 7x + 12

    Simplify:

    2x² + 3x + x² - 7x + 12: 3x² - 4x + 12

    = 3x² - 4x + 12
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