$3\cos\left(\pi x\right)=2$
$803.25+650.94+34.876$
$3\cdot\left|2\left(4-2\right)+3\left(2-4\right)\right|$
$\left(3xy+2yz\right)^2$
$4y+8x=6$
$s^2-4s-21$
$-2\:-\:\left(-6\right)$
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