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4 June, 02:37

Use the quadratic formula to find both solutions to the quadratic equation

given below.

2x2 + x - 1 = 0

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Answers (1)
  1. 4 June, 06:11
    0
    Step-by-step explanation:

    2x² + x - 1 = 0

    x² + x² + x - 1 = 0

    (x² - 1) + x² + x = 0

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

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

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