$\frac{1}{4}\int\left(\sqrt[2]{x^2+4}\right)dx$
$2x^2-9x+7$
$\left(-4\right)\left(4\right)\left(-1\right)$
$\log\left(11x^3+10x\right)$
$f\left(x\right)=\left(\pi-x\right)\tan\frac{\pi}{2}\:\:\:$
$\frac{\left(x^2+4x+100\right)}{x+1}$
$x^2+6x+13>0$
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