You have to find the square root of 6 and 10 so you say x which is not known plus the square root of 6 which 36 =square root of 10 which 100. X+36=100 so you take the plus to the other side and write x= 100-36 which will give you 64 so you look for the square root of 64 which is 8 and you got your answer X=8
