$\int\frac{1}{3}\sin xdx$
$\frac{a^7}{a^5}$
$12x^2y+16x^2y$
$x^2+6yx^2-3y=16$
$\int\frac{x^2+2x\:-1}{x^3-27}dx$
$\lim_{x\to\infty}4x^2-3x$
$\sin\left(140\right)\cos\left(20\right)-\cos\left(20\right)\sin\left(140\right)$
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