$\left(x+5\right)-\left(x-1\right)$
$9m-m^2$
$\left(3m^4-5\right)\left(3m^4-7\right)$
$7x+4>39$
$\frac{1}{3x^2}+2x^3+\frac{2}{\sqrt{x}}$
$x+14=121$
$\left(-10ab^2\right)\left(-b\right)\left(-3c^2\right)$
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