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3 January, 20:06

What number must you add to complete the square? x2 + 12x = 40

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  1. 3 January, 20:09
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    X² + 12x = 40

    x² + 12x + (6) ² = 40 + (6) ²

    x² + 12x + 36 = 40 + 36

    (x + 6) ² = 76

    Answer: 36 must be added to both sides to complete the square.
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