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BabaBlast [244]
3 years ago
14

Solve for x: 2|2x − 2| + 4 = 20.

Mathematics
2 answers:
barxatty [35]3 years ago
8 0
<span><span>Subtract 4 from both sides of the equation.
<span>2<span>|2x−2|</span>=16</span></span><span>Divide both sides of the equation by 2.
<span><span>|2x−2|</span>=8</span></span><span>Set 2x-2 equal to positive and negative 8.
<span>2x−2=8,2x−2=−8</span></span><span>Solve both equations for x.
<span>x=5,−<span>3</span></span></span></span>
Free_Kalibri [48]3 years ago
7 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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