$-\frac{3-x}{2x}\le4x$
$6x^2-x-2=0$
$15p^4+5b-20$
$\left(6x^2y-11z\right)^2$
$9x^2-3x-1$
$5\left(3g+3\right)$
$10x^2-8+12$
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