$4x^2-12x$
$\left(m^2+u^2\right)\left(m^4-m^2u^2+u^4\right)$
$\int x^8\left(x^9+3\right)^7\:dx$
$121x^2-64y^8$
$9x-4<5x+16$
$\left(0+\frac{1}{n}i\right)\left(0+\frac{1}{n}i\right)$
$x-4>2x+3$
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