t7iful3pepateritts
t7iful3pepateritts t7iful3pepateritts
  • 31-05-2016
  • Mathematics
contestada

Solve for x: 5|2x − 2| + 8 = 18.

x = 2, x = −2
x = −2, x = 0
x = 2, x = 0
x = 0, x = 1 over 2

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apologiabiology
apologiabiology apologiabiology
  • 01-06-2016
remember
|x| makes x posotive
5|2x-2|+8=18
minus 8 both sides
5|2x-2|=10
divide both sides by 5
|2x-2|=2
assume
2x-2=2 and 2x-2=-2

2x-2=2
add 2
2x=4
divide 2
x=2

2x-2=-2
add 2
2x=0
x=0


x=0 or x=2


3rd choice
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