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18 August, 04:04

Find the roots

2x 2 + 4x - 5 = 0

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Answers (1)
  1. 18 August, 04:13
    0
    Use the quadratic formula

    x = [-4 + - sqrt (16 - 4*2*-5) ] / 4

    x1 = [-4 + sqrt (56) ] / 4

    x2 = [-4 - sqrt (56) ] / 4
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