$2n^2-3n+1$
$\left(-8+88\right)-\left(-88+8\right)$
$x^2+16>0$
$m2-15m+36$
$100x^4+4y^2-40x^2y$
$\frac{x-1}{1-2x}+\frac{4}{x+4}=0$
$\lim_{n\to0}\left(\frac{n+1}{n-5}\right)^{6n-2}$
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