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9 December, 00:58

Use any method for solve the following equation for x. 0=x^2+3x-18

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  1. 9 December, 01:10
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    I am going to use factorization

    0=

    x^2+3x-18

    0 = (x-3) (x+6)

    6x-3x-18

    0 = x^2+3x-18

    I am just double checking to see if my factorization is right first.

    (x-3) (x+6) = 0

    x-3+3 = 0+3

    x = 3

    x+6=0

    x+6-6=0-6

    x=-6

    Answer : x=3, x=-6
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