$4x^4-101x^2+25$
$\frac{8}{3s}^{-2}$
$ln\left(\frac{x^3\sqrt{x^2+1}}{\left(2x-3\right)^5}\right)$
$-100+-9$
$\lim_{-x\to4}\left(\sqrt{4-x}\right)$
$x^3+1-x^2-2$
$\frac{1}{\cos\left(x\right)^2}=-2$
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