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30 January, 14:17

Factor completely. 5 x2 + 10 x - 40

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  1. 30 January, 14:41
    0
    Steps to factor:

    5x² + 10x - 40

    ~Factor out 5

    5x² + 5 * 2x - 5 * 8

    ~Simplify

    5 (x² + 2x - 8)

    ~Break up x² + 2x - 8 in the expression

    (x² - 2x) + (4x - 8)

    ~Factor out x and 4

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

    ~Factor out common term (x - 2)

    (x - 2) (x + 4)

    ~Add 5 back

    5 (x - 2) (x + 4)

    Best of Luck!
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