Exercise: (1) One third under the root sign * under the root sign 108 = 3 * 6 times the root sign 3=6.

(2) number of roots 0.4* number of roots 3.6= number of roots 0.4*0.6=0.6 times number of roots 0.4.

(3) Five times the number of radicals 45* three times the number of radicals two thirds = fifteen times the number of radicals thirty.

(4) Root number 30* Root number 2 and 2/3 * Root number 0.4= 16

(5) Cubic radical number 20* (radical number 15)*(- one third radical number 48)= 180.