$\left(-\frac{1}{2}+7\right)^{-2}+105^0$
$\left(\left(-5\right)^5\right)^2$
$1-\frac{x}{x}$
$x^3+2x^5-x^7$
$p+6p+11p+6$
$\lim_{x\to\infty}\left(\frac{log^kx}{x^e}\right)$
$x^4-121y^8$
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