16. Arrange in order from greatest to least a) 4-8,8,-32,72 b) 33,25,21,5 17. Write each entire...

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16. Arrange in order from greatest to least a) 4-8,8,-32,72 b) 33,25,21,5 17. Write each entire radical as a mixed radical, if possible. a) 128 432 b) 48 81 18. Write the values of the variable for which each radical is defined, then simplify the radical if possible. a) 4x b) 49.x c) -27x' d) 81x 19. Identify the values of the variables for which each radical is defined where necessary, then simplify. a) 18+32-50 b) 54x-24x+22x 16. Arrange in order from greatest to least a) 4-8,8,-32,72 b) 33,25,21,5 17. Write each entire radical as a mixed radical, if possible. a) 128 432 b) 48 81 18. Write the values of the variable for which each radical is defined, then simplify the radical if possible. a) 4x b) 49.x c) -27x' d) 81x 19. Identify the values of the variables for which each radical is defined where necessary, then simplify. a) 18+32-50 b) 54x-24x+22x