$\lim_{x\to0}\left(\sec\:x\right)\frac{1}{x}$
$\left(22+4\right)-17+5\left(3^2-5\right)$
$\int3e^{3y}\left(5+4e^{3y}\right)^4dx$
$\frac{dy}{dx}=cx$
$6x^2+5x-1=0$
$-4+3x\le-2$
$5x^2+2x-7$
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