$-\left(-417\:-\:78\right)\:-\:\left(-518\:-\:287\right)$
$x+x^{-1}=3$
$-\left(\frac{1}{2}\right)^{-2}$
$\left(3w+6\right)^3$
$1\cdot\left(5+8\right)-5\cdot\left(5+2\right)^2$
$\frac{dy}{dx}=cx\:+\:c^2$
$22^2+41^2$
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