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18 October, 09:43

What is the quadratic formula for 5x^2+9x-7=0?

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Answers (2)
  1. 18 October, 09:47
    0
    X = [ 9 ± √ (81 + 40) ] / 10

    x = [ 9 ± √ (121) ] / 10

    x = [ 9 ± 11) ] / 10

    x = 2, x = - 1/5

    OR

    (5x + 1) (x - 2) = 0

    x = - 1 / 5, x = 2
  2. 18 October, 09:52
    0
    The actual formula is - b±√b^2-4ac : 2a
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