$\int\frac{1}{\sqrt{4-49x^2}}dx$
$x^2+8\ge6x$
$\frac{x^2-2x+1}{x^2-2x+3}$
$n^2-3n+n^2$
$\frac{dy}{dx}=4x^3+3x^2+2$
$\sin\left(x\right)^2+2\cos\left(x\right)-2=0$
$\lim_{x\to3}\left(\frac{x^2-3x}{\sqrt{x-2}-1}\right)$
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