$-1+2x^3,2x-1$
$4^3\cdot4^3\cdot5$
$\cot\left(x\right)=\csc\left(x\right)$
$\lim_{x\to-11}\left(\frac{x^3+1331}{x^2+11x}\right)$
$4xy-2y^2$
$\int7te^{4t}dt$
$4sin\left(3x\right)=-0.25$
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