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Question

If |x|1|x|2=4, then x

A
{95,73,73,95}
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B
{73,95}
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C
{73,73}
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D
{95,95}
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Solution

The correct option is A {95,73,73,95}
|x|1|x|2=4
|x|1=±4(|x|2), x±2
5|x|=9 or 3|x|=7, x±2
x=±95 or x=±73, x±2
x=±73,±95

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