(3w)^(2/3) is also equal to? like what does the exponenet do to 3w?
$$\\(3w)^{2/3} =[(3w)^{2}]^{1/3} =\sqrt[3]{(3w)^{2}}\\\\ (3w)^{2/3}=[(3w)^{1/3}]^{2} =[\sqrt[3]{(3w)}]^2\\\\ (3w)^{2/3}=3^{2/3}*w^{2/3}\\\\$$
How many more options do you want ?