$\lim_{x\to0}\left(\frac{e^{2x}}{cosx-\left(x+1\right)}\right)$
$\cos\left(4x\right)-cos2x$
$\frac{3x^2y^{-3}}{12x^6y^3}$
$\left(\frac{1}{8}\right)\:t^3+64$
$\left(\frac{4}{5}f^3-\frac{9}{8}m^4\right)^2$
$80+310+545+500$
$\left(4ab-7c\right)\left(5x+3\right)$
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