Răspuns: 3
Explicație pas cu pas:
[tex]\sqrt{5\frac{4}{9} } =\sqrt{\frac{5*9+4}{9} } =\sqrt{\frac{49}{9} }=\frac{7}{3} \\ \\\sqrt{0.(4)} =\sqrt{\frac{4}{9} } =\frac{2}{3}\\ \\\frac{7}{3} +\frac{2}{3} =\frac{9}{3} =3[/tex]
