$\int\:\frac{\sec\:\theta}{\cos\:\theta}\:d\theta$
$\int\frac{x+2}{2y}dx$
$-\frac{dy}{dx}-\frac{y}{x}=\frac{e^{2x}}{x}$
$3x^2-x-1=0$
$\lim_{x\to-2}\left(-3x^2-6x+1\right)$
$2^0\cdot2^3$
$\left(-7\right)x\left(-2\right)\:x\:2\:x\:\left(-3\right)\:x\:\left(-5\right)\:x\:2$
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