Express using radical notation :

(6ab)^4/3

To express (6ab)^(4/3) using radical notation, we need to recognize the fractional exponent as the root of the expression.

Step 1: Determine the index of the radical.
The index is the denominator of the fractional exponent, which in this case is 3.

Step 2: Identify the radicand.
The radicand is the expression inside the parentheses, which in this case is 6ab.

Step 3: Write the radical notation.
Using the index and the radicand, we can now write the expression in radical notation:

∛(6ab)^4

This can be read as "the cube root of (6ab) raised to the power of 4".