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31 March, 00:35

3x^2+5x-2=0 solve quadratic equation by factoring

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  1. 31 March, 00:44
    0
    Hmm

    trial and error

    factor

    (3x-2) (x+1) nope

    (3x+2) (x-1) nope

    (3x-1) (x+2) yes

    (3x-1) (x+2) = 0

    set them to zero

    3x-1=0

    3x=1

    x=1/3

    x+2=0

    x=-2

    x=-2 and 1/3
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