$3n\:+\:3\:$
$2xy+4ap-7ap+3xy$
$\int\frac{\left(4-x^2\right)^{\frac{5}{2}}}{x^8}dx$
$\int\frac{x}{\left(2-4x^2\right)^3}dx$
$\lim_{x\to0}\left|2x\right|$
$5x^2+40x=0$
$3x^2+4x\::\:x+1$
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