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29 January, 09:35

Solve for x. x2 + 7x + 10 = 0 A. - 2, - 5 B. - 2, 5 C. 2, - 5 D. 2, 5

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  1. 29 January, 12:38
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    A. - 2, - 5

    Step-by-step explanation:

    x^2 + 7x + 10 = 0

    Factor the equation

    What 2 numbers multiply to 10 and add to 7

    2*5 = 10

    2+5 = 7

    (x+2) (x+5) = 0

    Using the zero product property

    x+2 = 0 x+5 = 0

    x=-2 x = - 5
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