2)
We have to find the value of
[tex]\sqrt[]{9}[/tex]
Factor the number 9.
[tex]\begin{gathered} \sqrt[]{9}=\sqrt[]{3\times3} \\ =\sqrt[]{3^2}^{}\text{ ---(1)} \end{gathered}[/tex]
According to radical rule,
[tex]\sqrt[]{a^2}=a\text{ , a}\ge0[/tex]
Applying the radical rule to right hand side of equation (1),
[tex]\sqrt[]{9}=3[/tex]
Therefore, the correct expression is,
[tex]\sqrt[]{9}=3[/tex]
