$-17-22-20+\left(11\right)$
$x^2-25\cdot x^2-25$
$2x^2+18x=-3$
$1x^2-2x+5$
$-557+880$
$\frac{\pi}{3}-\frac{\pi}{2}$
$\frac{d}{dx}\left(x-e^{\frac{z}{y}}\right)$
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