$a+a+1\sqrt{a^{4}-a^{2}-2a-1}$
$\sqrt[28]{\frac{x^{-4}}{x^3}}$
$3x^2-12x+2y=0$
$\left(z^3-3z^2+1\right)^3$
$\frac{\tan\:\left(t\right)\left(\sin\:\left(t\right)+\cos\:\left(t\right)\right)}{\sin\:\left(t\right)}-\tan\:\left(t\right)$
$2\frac{1}{2}2$
$-40-\left(-40\right)$
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