$-1389+88$
$y\frac{dx}{dy}+x=\frac{2}{y-1}$
$\frac{\cos\:2\left(x\right)}{1-\sin\:2\left(x\right)}=\frac{\cos\:\left(x\right)+\sin\:\left(x\right)}{\cos\:\left(x\right)-\sin\:\left(x\right)}$
$\left(8+\left(-4\right)\right)+2\left|5-3\left(5-3\right)+\left(-4\right)\right|-\left(4+\left(-2\right)\right)$
$y=\frac{1}{2}\log x$
$5ab\:\left(2ab\:-\:3b\right)\:$
$x^3\cos\left(\frac{x}{2}+\frac{1}{2}\right)$
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