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15 February, 06:12

Solve the equation for all real solutions in simplest form. (use quadratic formula)

4k^2+17k+7=3k

a=4 b=14 c=7

+5
Answers (1)
  1. 15 February, 08:52
    0
    4k² + 17k + 7 = 3k

    - 3k - 3k

    4k² + 14k + 7 = 0

    x = - (14) + / - √ ((14) ² - 4 (4) (7))

    2 (4)

    x = - 14 + / - √ (196 + 112)

    8

    x = - 14 + / - √ (308)

    8

    x = - 14 + / - 2√ (77)

    8

    x = - 7 + / - √ (77)

    4

    x = - 1.75 + / - 0.25√ (77)

    x = - 1.75 + 0.25√ (77) ∨ x = - 1.75 - 0.25√ (77)
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