$\left(2x^5+4x^2\right).\:\left(2x^5-4x^2\right)$
$\lim_{n\to\infty}\:1+\left(-2\right)^{2n}$
$2x^2-14x+32$
$6z-11\ge7$
$5\left|\left(11-5\right)+12-19\right|$
$\left|6\right|-\left|-6\right|-\left|-6\right|$
$\frac{81x^6}{2}+9x-x^2$
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