$\left(3-\sqrt{x-2+x}\right)$
$v^2-16$
$\lim_{x\to2}\left(\frac{x^2+3x+2}{x^2-x-6}\right)$
$\frac{dy}{dx}=3+b\cdot5$
$-7-\left(-15\right)$
$x^2-5x-36=0$
$\left(a^2-2a+2\right)-\left(3a^2-3a-7\right)-\left(2a^2-5a+8\right)$
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