$4\:\cos2x^2-\:8\:\cos\left(2x\right)=-3$
$\frac{m^6+n^3}{m^2+n}$
$\int ( t + 2 ) ( t - 2 ) d t$
$\frac{z}{z-2}=1+\frac{1}{z-3}$
$3^{n-1}\cdot3^4$
$4cos^2\left(x\right)-cos\left(x\right)-2$
$2\cos^2\left(x\right)=\sqrt{3}\cos\left(x\right)$
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