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12 January, 21:50

Solve by completing the square b^2 + 6b - 16 = 0

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  1. 12 January, 22:08
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    b² + 6b - 16 = 0

    b² + 8b - 2b - 16 = 0

    b (b) + b (8) - 2 (b) - 2 (8) = 0

    b (b + 8) - 2 (b + 8) = 0

    (b - 2) (b + 8) = 0

    b - 2 = 0 or b + 8 = 0

    + 2 + 2 - 8 - 8

    b = 2 b = - 8
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