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23 September, 23:26

Solve x^2 + 8x + 8 = 0 by completing the square.

Which equation is used in the process?

(x + 4) ^2 = 0

(x + 4) ^2 = 4

(x + 4) ^2 = 8

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Answers (2)
  1. 23 September, 23:27
    0
    x² + 8x + 8 = 0

    x² + 8x + 8 + 8 = 0 + 8

    x² + 8x + 16 = 8

    x² + 4x + 4x + 16 = 8

    x (x) + x (4) + 4 (x) + 4 (4) = 8

    x (x + 4) + 4 (x + 4) = 8

    (x + 4) (x + 4) = 8

    (x + 4) ² = 8

    The answer is C.
  2. 23 September, 23:48
    0
    The answer is C: (x + 4) 2 = 8
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