Respuesta :

this is an equation of ellipse

where

[tex]a=3,b=2[/tex]

for ellipse

[tex]c^2=a^2-b^2[/tex]

so

[tex]\begin{gathered} c^2=9-4 \\ c^2=5 \\ c=\pm\sqrt[]{5} \end{gathered}[/tex]

hence

[tex]a+c=3\pm\sqrt[]{5}[/tex]

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