$4x^3-4y$
$\int cos^5\:4x\:dx$
$\frac{x^2+2xy+y^2}{x^2-2xy+y^2}$
$4\sin\left(x\right)-1=2$
$-3bc-6cd-ab$
$\lim_{x\to\infty}\left(\frac{2x^2\cdot e^{-x}}{1}\right)$
$2t^2-4t+1$
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