Simplify the radical: 162x6y5−−−−−−−√ Responses 9xy22x5y3−−−−−√ 9 x y squared square root of 2 x to the 5th power y cubed end root 12x3y27y−−√ 12 x cubed y squared square root of 7 y 12x4y7xy2−−−−√ 12 x to the 4th power y square root of 7 x y squared end root 9x3y22y−−√