$8-\left(-20\right)$
$\frac{dy}{dx}=\frac{x}{-2y}$
$36x^2+120x+160$
$\int\left(x^2-3\right)^32x\:dx$
$\tan\left(\arccos\left(\frac{x}{\sqrt{x^2+16}}\right)\right)$
$0.25+2.25+0.25+-6.25+6.25+-20.25+2.25+-6.25+6.25+6.25$
$-3.84i-9i$
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