this should be some of the LAST ones...i know, they get on my nerves too
46)³√5÷3x (5 and 3x are both in the square root sign)
48) 15√60x^5÷³√12x
50)√5x^4y÷2x^2y^3
ALL of the ³√ signify a CUBED ROOT
$$\sqrt[3]{\frac{5}{3x}}=\left(\frac{5}{3x}\right)^{1/3}$$ There is nothing else you can do with it!