1003187004 | math4u.vsb.cz

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1003187004

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Let

x \in (- \infty; 0)

. The expression

| x - | x | | + | x + | x | | + 1 - x | x |

is equal to:

(x - 1)^{2}

(x + 1)^{2}

x^{2} + 1

1 - x^{2}