$\int2\sec^3\left(x\right)dx$
$-7-\left(-4+6\right)\cdot5-3\cdot\left(-9\right)$
$2cos\left(x\right)=\sqrt{2}$
$\lim_{x\to\infty}\left(\frac{\sqrt{x+1}-1}{\sqrt[3]{x+1}-1}\right)$
$9xy+3x$
$5+7+8\left(22-105\right)+40$
$x^5-4x^4-x^3+10x^2+2x-4$
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