$3+2x\le7$
$\left(\sqrt{5}s^3p^7\right)^3$
$-3+4-7-6-2+5\:+1$
$\int6xsin\left(3x\right)dx$
$x^2+20x+36=0$
$5n=-5+5n$
$18nz+9z^2$
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