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3 October, 15:53

What is 3x=√8-6x? show steps

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Answers (2)
  1. 3 October, 16:01
    0
    3x = √ (-6x + 8)

    (3x) ² = (√ (-6x + 8)) ²

    9x² = - 6x + 8

    9x² - 9x² = - 9x² - 6x + 8

    0 = - 9x² - 6x + 8

    x = - (-6) ± √ ((-6) ² - 4 (-9) (8))

    2 (-9)

    x = 6 ± √ (36 + 288)

    -18

    x = 6 ± √ (324)

    -18

    x = 6 ± 18

    -18

    x = 6 + 18 U x = 6 - 18

    -18 - 18

    x = 24 U x = - 12

    -18 - 18

    x = - 1¹/₃ U ²/₃

    Solution Set: {-1¹/₃, ²/₃}
  2. 3 October, 16:05
    0
    3x=√8-6x

    Simplifies to

    3x=-6x+2.828427

    Add 6x to both sides

    .

    3x+6x=-6x+2.828427+6x

    9x=2.828427

    Divide both sides by 9.

    9x/9=2.828427/9

    x=0.31427
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