$9m^2+42m+49$
$\left(x^5-3x^4+3x-1\right)$
$x^2-3x-54=0$
$-50\cdot7$
$\frac{a^3b^3c^5}{ab^6c^2}$
$25m^2-100m+100$
$\lim_{x\to0}\left(\frac{2e^{3x}-2}{x^1}\right)$
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