$2x+11x+11$
$xy-3y+4x^2=7$
$41,258-3,258$
$5^7$
$483rx^2-460s^3x^2+168ry-160s^3y$
$\lim_{x\to\infty}\left(\frac{x^2+x-1}{x-2}\right)$
$\left(-\frac{1}{5}\right)^{-5}$
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