$\lim_{x\to1}\left(\frac{1-x^2}{\log\left(x\right)}\right)$
$\left[4x^2+13x-28\right]>6$
$\sec^2\left(1-\sin^2\right)=1$
$2a-a^2$
$\int43xdx$
$\frac{dy}{dx}=yx^{-1}$
$7\pi4$
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