$-3x>-14$
$8b^3+216$
$\left(-50v^4n+10v^2n^2+5vn\right)+\left(5vn\right)$
$x^2+81x+80=0$
$2b+2c+2d$
$\left(\frac{x}{2}+\frac{y}{3}\right)^2$
$\left(7a^2-3b\right)\left(49a^4+21a^2b+9b^2\right)$
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