$\left[\left(n+2\right)\left(n-2\right)\left(n^2-4\right)\right]^3$
$cos\:x\:\left(tan\:x\:+cot\:x\:\right)=cos\:x$
$14-\left(25+50\right)+36$
$-\frac{1}{2}x\left(6x-8\right)+\frac{1}{2}x\left(4x-6\right)-\frac{2}{3}x\left(3x+6\right)$
$-7+\left(-2-3\right)-\left(-5-6\right)$
$3x+11\:\le\:-\:14x+8$
$\frac{2x^3+3x^2+4x+5}{x^3-x}$
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