$78 \cdot 4 + 18 - ( - 2 ) 11$
$-e^{i\cdot x}+e^{i\cdot x}$
$\tan\left(\frac{\pi}{4}+\frac{e}{2}\right)$
$\int\frac{-x+4}{x^2+2x-3}dx$
$\int\left(12x\:3\:+\:9x\:2\:-\:6x\:+\:5\right)dx$
$\frac{4x+\sin\left(2x\right)}{x}$
$\left(16x^{-4}y^8\right)^{-\frac{1}{4}}\left(xy^{\frac{1}{4}}\right)$
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