$\int\frac{1}{z\left(4+z^2\right)}dz$
$\frac{d}{dx}x\:sin\:y\:=\:1$
$\left(10a+4\right)-\left(6+9a\right)+8\left(3a-7\right)$
$10x+3y+z-\left(5x-8y+3z+5x-2y-5z\right)$
$\left(3x+5y\right)^5$
$1.296-5.9$
$\csc\left(x\right).\tan\left(x\right).\cos\left(x\right)-\csc^2\left(x\right)$
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