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21 January, 21:19

Solve the equation using the quadratic formula 3x^2 = 2 (2x+1)

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Answers (2)
  1. 21 January, 22:26
    0
    Step 1: Make equation equal to Zero

    3x^2 = 4x + 2

    3x^2 - 4x - 2

    Step 2: use equation

    a = 3 b = - 4 c = - 2

    after plugging in answer should be

    (2 + or - sqrt 10) / 3
  2. 22 January, 00:53
    0
    3x² = 2 (2x+1)

    Expand the brackets

    3x² = 4x + 2

    Rearrange

    3x² - 4x - 2 = 0

    Quadratic formula is

    (-b ± √ (b² - 4ac)) / 2a

    Where

    a = 3

    b = - 4

    c = - 2

    Therefore, putting these values in to the quadratic formula:

    x = 15.487

    or

    x = - 3.487

    Round the answers how you will.
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