$\lim_{x\to-1}\left(\frac{x^2+x}{x+1}\right)$
$\int_0^{\infty\:}\left(\frac{1}{\left(1+x\right)^2}\right)dx$
$\int\sqrt{\sec\left(x\right)}dx$
$m^{9-64}$
$\left(\frac{2}{3}\right)\:.\:\left(-\frac{3}{2}\right)$
$\frac{dy}{dx}-3y\:=1$
$\frac{x^2+5x+2}{x+2}$
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