$6^2+12\cdot5+5^2$
$18x^4y-9xy^7$
$x-2\sqrt{2x^2}+x-9$
$\int\left(3\cos x-4\sin x+5\sec^2x\right)dx$
$\lim_{x\to0}\left(\frac{y^6}{x^{10}\cdot\:\:y^2+x^{15}}\right)$
$-56+38-109+21-387+302+18-45+82$
$\frac{4^{11}}{4^{-8}}$
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