1.

The set of all real numbers x for which \[{{x}^{2}}-[x+2]+x>0,\] is

A. \[\left( -\infty ,-2 \right)\cup \left( 2,\infty  \right)\]
B. \[\left( -\infty ,-\sqrt{2} \right)\cup \left( \sqrt{2},\infty  \right)\]
C. \[\left( -\infty ,-1 \right)\cup \left( 1,\infty  \right)\]
D. \[\left( \sqrt{2},\infty  \right)\]
Answer» C. \[\left( -\infty ,-1 \right)\cup \left( 1,\infty  \right)\]


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