Question 82065
square root72 + square root of 50  - square root of 8
  
square root of 36*2 + square root of 25 *2 - square root of 4*2

6*square root of 2 + 5*square root of 2 - 2* square root of 2

root2 is common in all the three radical, take out root 2 as common

root 2(6+5-2)

root 2(9)

9*1.412   (root 2 = 1.412)

12.71