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Simplify |x| - |-x|.​
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5 votes
Simplify |x| - |-x|.​

User TheFoxx
by
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1 Answer

3 votes


|-x|=|(-1)x|=|-1||x|=|x|

So we have


|x|-|-x|=|x|-|x|=0

for all
x.

User Mersedeh
by
9.2k points
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