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27 July, 09:39

Solve by factoring.

x2 + 6x = - 9. Hint: This is a double root.

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  1. 27 July, 10:36
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    X^2 + 6x = - 9

    (x + 3) ^2 - 9 = - 9

    (x + 3) ^2 = - 9 + 9 = 0

    x + 3 = 0

    x = - 3 (double root)
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