$3\left(-1\right)^2-1$
$8\cos\left(5\pi+\frac{3\pi}{2}\right)-9$
$\left(-4+10-6\right)\cdot\left(7-9\right)$
$49x^2-392x+809$
$\frac{dy}{dx}=\frac{x+3}{3+y}$
$\left(c+22\right)\left(c-22\right)$
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