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25 November, 07:53

Find either of the values of x

2x^2+3x-2=3

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Answers (1)
  1. 25 November, 10:54
    0
    x = 1 or x = - 5/2

    Step-by-step explanation:

    Solve for x over the real numbers:

    2 x^2 + 3 x - 2 = 3

    Divide both sides by 2:

    x^2 + (3 x) / 2 - 1 = 3/2

    Add 1 to both sides:

    x^2 + (3 x) / 2 = 5/2

    Add 9/16 to both sides:

    x^2 + (3 x) / 2 + 9/16 = 49/16

    Write the left hand side as a square:

    (x + 3/4) ^2 = 49/16

    Take the square root of both sides:

    x + 3/4 = 7/4 or x + 3/4 = - 7/4

    Subtract 3/4 from both sides:

    x = 1 or x + 3/4 = - 7/4

    Subtract 3/4 from both sides:

    Answer: x = 1 or x = - 5/2
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