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Is x equal to –1? (1) |2x – 2| + |2x + 2| = 4 (2) |3x – 2| + |3x + 2|=

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Bunuel

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Is x equal to –1? (1) |2x – 2| + |2x + 2| = 4 (2) |3x – 2| + |3x + 2|= [#permalink]

27 Nov 2017, 00:01

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E

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Is x equal to –1?

(1) |2x – 2| + |2x + 2| = 4
(2) |3x – 2| + |3x + 2| = 6

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E

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rahul16singh28

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Re: Is x equal to –1? (1) |2x – 2| + |2x + 2| = 4 (2) |3x – 2| + |3x + 2|= [#permalink]

27 Nov 2017, 00:35

Bunuel wrote:

Is x equal to –1?

(1) |2x – 2| + |2x + 2| = 4
(2) |3x – 2| + |3x + 2| = 6

Stm 1: X can be 1,-1,0,1/2,-1/2 etc.
Stm 2: X can be 1,-1 etc.

Combined - 1,-1 etc.

Should be E.

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Alexey1989x

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Re: Is x equal to –1? (1) |2x – 2| + |2x + 2| = 4 (2) |3x – 2| + |3x + 2|= [#permalink]

27 Nov 2017, 00:53

(1) When opening module, we can find that equation has 2 solutions: 1 and -1
(2) same as above
Answer E

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Is x equal to –1? (1) |2x – 2| + |2x + 2| = 4 (2) |3x – 2| + |3x + 2|=