$3x^2+2x+1<0$
$53a\:-18b+\:74c\:-29a\:-\:26b\:-35c$
$5\left(4x-3\right)$
$\left(5+7m^2\right)-\left(2n^4-3\right)$
$5x^3+3y^20$
$-5+3-\left(-2\right)+\left(+3\right)-\left(-7\right)$
$\frac{9^{3n}}{3^{6n}\cdot3}$
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