1003187004

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1003187004
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Let \( x\in(-\infty;0) \). The expression \( \left|x-|x|\right| +\left|x+|x|\right|+1-x|x| \) is equal to:
\( (x-1)^2 \)
\( (x+1)^2 \)
\( x^2+1 \)
\( 1-x^2 \)