$+289-412$
$-65\left(15\right)$
$\frac{a^3b^{-2}c^{-4}}{x^{-2}y^{-3}z^5}$
$\lim_{x\to0}\left(1+x\right)^{\frac{1}{2x+1}}$
$\frac{\tan\left(x\right)}{1-\tan\left(x\right)}+\frac{\cot\left(x\right)}{1-cot\:x}$
$x^2+19x+25$
$\left(4x^5\right)^3+\left(y^4\right)^3$
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