$\frac{d}{dx}9x^2+7xy-y^2=8$
$-33\:+\:10\:-\:54\:+\:89\:-\left(-32\:+14\:-15\right)$
$\frac{3v^{12}\:\:}{v^4\:\:}$
$148\cdot4$
$x^2+11x+12\ge0$
$8\left(-3x-7\right)+6=-185+3\left(-x+3\right)$
$\left(8-a+b\right)^2$
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