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11 August, 03:11

Solve for x: 2|2x - 2| + 4 = 20.

x = 5, x = - 3

x = 5, x = - 5

x = 3, x = - 3

x = - 5, x = 3

+5
Answers (2)
  1. 11 August, 04:04
    0
    Subtract 4 from both sides of the equation.

    2 |2x-2| = 16 Divide both sides of the equation by 2.

    |2x-2| = 8 Set 2x-2 equal to positive and negative 8.

    2x-2=8,2x-2=-8 Solve both equations for x.

    x=5, - 3
  2. 11 August, 06:59
    0
    2|2x - 2| + 4 = 20.

    2|2x - 2| = 20. - 4

    2|2x - 2| = 16

    |2x - 2| = 8

    That means:

    1st: 2x-2 = 8 and 2nd: 2x - 2 = - 8

    1st: 2x=10 and x = 5

    2nd 2x-2=-8, 2x = - 6 and x = - 3

    So x = 5 and x = - 3 (1st answer)
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