$2x+3\left(1-2x\right)\le x+8$
$2x+5=45$
$\left(4b+5b\right)^3$
$2mx^4+3nx^4+10n+15n$
$10x+q+3+5x+qx$
$12+\left(-5\right)\cdot\left(8-9\right)$
$4x^2-12x+5$
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