$e^{-x}+y=\frac{1}{\sqrt{x^2+1}}+6$
$\left(3z^5\:+7z^2\right)^2$
$\left(-\frac{1}{2}\cdot a-\frac{2}{3}\cdot b\right)\cdot\frac{2}{5}a^2$
$x^4+3x^2-6$
$-495-\left(+65\right)$
$\frac{5}{3-x}\:\ge\:2$
$\left(-2\right)^3+3\left(-2\right)^2+2\left(-2\right)$
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