$37,9+136,92+572$
$45\cdot101$
$3\left(-5\right)^2+5\left(-5-4\right)$
$6\left(d+5\right)$
$15-x-17$
$-207+570-385+67-748$
$\frac{d}{dx}\left(xz^3+y^3z+x^3y-x^2-y^2-z^2=0\right)$
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