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7 December, 12:34

Use completing the square to solve the equation x2+16x=-44. First determine the number you must add to both sides of the equation.

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  1. 7 December, 14:56
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    x = - 8 ± √ (56)

    Step-by-step explanation:

    x2 + 16x = - 8

    Add 64 to both sides: x2 + 16x + 64 = - 8 + 64

    Factor and simplify: (x + 8) 2 = 56

    Use the square root method: x + 8 = ± √ (56)

    Subtract 8 from both sides: x = - 8 ± √ (56)
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