$\frac{2-\cos\left(a\right)^2}{\sin\left(a\right)}=\csc\left(a\right)+\sin\left(a\right)$
$1x-0y$
$\frac{u^{\frac{3}{2}}}{\frac{3}{2}}$
$\cot+1=\csc\cdot\cos+\sin$
$\frac{25xy}{5y}$
$\left(-9\right)\:+\:\left(-8\right)\:-\:\left(-1\right)\:-\:\left(17\right)\:-\:\left(-25\right)$
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