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23 October, 10:09

X^2 + 6x = - 9 User:

Which of the following equations shows the correct form of the equation x^2 + 10x + 25 = 16 if the zero product property is to be used?

(x + 5) (x + 5) = 16

(x + 1) (x + 9) = 0

(x - 1) (x - 9) = 0 User: 3x2 = 147

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  1. 23 October, 12:44
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    X² + 10x + 25 = 16

    x² + 10x + 25 - 16 = 0

    x² + 10x + 9 = 0

    (x + 1) (x + 9) = 0

    x (x+9) + 1 (x+9) = 0

    x² + 9x + x + 9 = 0

    x² + 10x + 9 = 0

    (x + 1) = 0

    x = - 1

    (x + 9) = 0

    x = - 9
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