$\frac{n^2}{n+1}$
$\sqrt[5m]{2}\cdot\sqrt[4m]{2}$
$\left(3m+2^2\right)$
$\lim_{x\to-2}\left(\frac{x^2+5x+6}{x+4}\right)$
$y-127=475$
$\left(-5\right)^3-7^2+\left(-6\right)^4$
$m\left(a+b\right)+x\left(a+b\right)$
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