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20 October, 08:47

What are the approximate solutions of 5x2 - 7x = 1, rounded to the nearest hundredth?

No real solutions

x ≈ - 0.65 and x ≈ 7.65

x ≈ - 1.53 and x ≈ 0.13

x ≈ - 0.13 and x ≈ 1.53

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Answers (1)
  1. 20 October, 11:17
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    5x^2 - 7x - 1 = 0

    x = (7 + / - sqrt (49 - (4) (5) (-1))) / 10

    x = (7 + / - sqrt (69)) / 10

    x = - 0.13, 1.53
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