$x+2+2x+1+x+3+3+3x+2$
$w=\sqrt{x^2+y^2}\:\:$
$-2u^2+3u^2-1$
$14+a-26$
$\frac{dy}{dt}+6y=e^{2t}$
$12a-25a-73$
$-2b^5\left(b^3\right)^4$
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