$2x+3<3-x$
$4-3x-x^2\ge0$
$9x^2+7x^5-3x+2-7x^3-6x^5+3$
$5^{11}$
$\left(2^n-a^n\right)^2$
$343\cdot8$
$-5\left(-4+2\right)$
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