$\ln\left(e\right)^y$
$5\:7^2+6$
$-20\cdot6\cdot\left(-14\right)\cdot\left(-7\right)\cdot\left(-2\right)$
$\frac{4}{x}-\frac{x}{5}$
$\cos\left(2x\right)\cos\left(3x\right)-\sin\left(2x\right)\sin\left(3x\right)$
$\frac{z^{-5}}{z^3}$
$sin\left(arcsin\left(\frac{6}{7}\right)+arccos\left(-\frac{3}{4}\right)\right)$
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