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14 August, 01:12

Solve x2 + 6x + 7 = 0.

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Answers (2)
  1. 14 August, 01:25
    0
    So the answer would be c
  2. 14 August, 05:01
    0
    This wont factor so we could solve it by completing the square:-

    x^2 + 6x = - 7

    (x + 3) ^2 - 9 = - 7

    (x + 3) ^2 = 2

    x + 3 = + / - sqrt2

    x = sqrt2 - 3, - sqrt2 - 3

    = - 1.59, - 4.14 to nearest hundredth
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