how do you get the square root of 72/98
72=2 X 2 X 2 X 3 X 3=6sqrt(2)
98=2 X 7 X 7 =7sqrt(2)
6sqrt(2)/7sqrt(2) which is your answer.
Guest could have carried this one step further.....
6sqrt(2) / 7sqrt(2) = 6 / 7
Also note that 72/98 = 36/49 and the square root of this is just 6 / 7
