(3 radical 3)^4= 3^4 (radical 3)^4

= 81 radical 81 = 81 *3 radical 3 = 243 radical 3. Did I do this right? Is the answer right?

(3 *3^.5)^4

3^4 * 3^2 =

3^6 =

3^2 * 3^2 *3^2 =

81*9 =

729