$3xy+y^2;si\:x=3,y=-1$
$2-2\sin\left(x\right)=4\cos\left(x\right)^2$
$\int-4x\cdot e^{3x}dx$
$\lim\:_{x\to\:\frac{\pi}{2}}\left(\csc\left(x\right)-\cot\left(x\right)\right)$
$736\cdot12$
$x\left(t\right)=10-50t+6t^2$
$q^2+q-12$
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