$x\left(x-3y\right)$
$3x\:+\:7\:=\:3\left(x-2\right)$
$s^3+s+2s^2+2$
$4x^2+2\sqrt{zx}+1$
$3x\:+\:1\:\ge\:2x\:-\:3$
$m^5-2m^2+1$
$\frac{45}{\left(-5\right)}$
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