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3 July, 21:28

Solve by completing the square:

x^2-6x-11=0

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  1. 3 July, 21:42
    0
    X^2-6*+9-9-11=0

    (*-3) ^2-20=0

    (*-3-4.5) (*-3+4.5)

    (*-7.5) (*+1.5) = 0
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