$r=\frac{-b+-\sqrt[\phantom{2}]{b^2-4ac}}{2a}$

Name your function Quad.

Function $0$

$\%$ Variables

$\%$ Inputs

$\%$ a $($first input argument$)$

$\%$ b $($second input argument$)$

$\%$ c $($third input argument$)$

$\%$ Outputs

$\%$ positive root $($first output argument$)$

$\%$ negative root $($second output argument$)$

$\%$ Function

Code to call your function $2$

$a=2$;

b $=4$;

$c=1$;

$[r1,r2]=$Quad$(a,b,c)$;