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4 September, 21:11

Which equation has the solutions x=1+/-/sqrt 5? x2 + 2x + 4 = 0 x2 - 2x + 4 = 0 x2 + 2x - 4 = 0 x2 - 2x - 4 = 0

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  1. 4 September, 21:21
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    the correct answer is:

    x2 + 2x - 4 = 0

    by using the quadratic formula you end up with 2 sqrt (-2^2-4*-4) / 2

    which reduces to 1 + / - sqrt (5)
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