$15x^2-8x-16$
$-1180+4750-630-496-518-4150+973-21$
$\frac{1}{1-n}+\frac{1}{1+n}=\sec\left(x\right)^2$
$x\:2\:-\:x\:-\:72\:=\:$
$\frac{5x^3\:-\:x^2\:-\:3x\:}{x-1}$
$\left(\frac{4}{3}-\frac{3}{4}x\right)^3$
$\left(5m^3+2m^2-2m-5\right)\:\left(3m-2\right)$
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