$\frac{dv}{dx}+v\sec\left(x\right)=\cos\left(x\right)$
$\left(3x^2+5\right)^2$
$\left(n^3-025\right)^2$
$\int\frac{x}{1+\left(x^2+4\right)^2}dx$
$\frac{d}{dx}x^{x-4}$
$8x-3>7x+12$
$\int\frac{x^2+2x+1}{x^3+x}dx$
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