$\lim_{x\to-1}\left(\frac{x^4+9x^3+9x+17}{x+1}\right)$
$y^24y+3$
$c^2-30c+225=\left(c-15\right)$
$\left(3w\right)\left(4w\right)\left(w-4\right)$
$\lim_{t\to\infty}\left(-x\frac{1-e^{2t}}{1+e^{2t}}\right)$
$\lim_{x\to\infty}\left(\frac{4^x}{xe^x}\right)$
$\left(8h^3y\right)^4$
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