$\lim_{x\to0}4x^2-15$
$9+6m+1$
$186=16+\frac{x}{14}$
$\int t^2\cdot e^{3t}dt$
$\left(1-\cos^2\right)\left(\csc^2-1\right)$
$\int x^3\cdot e^{-a\cdot x^2}dx$
$\left(5-x^3\right)^4$
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