$5-5+4-7+12-6+2$
$\frac{dy}{dx}x\sqrt{x^2+30}$
$\left(+65\right)-\left(-10\right)$
$\tan x+\tan y=\tan x\tan y\left(\cot x+\cot y\right)$
$\frac{1}{y^{\frac{-1}{4}}}$
$x^2-2x+3=0$
$-5-9-\left(-6\right)+\left(-2\right)+12$
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