First multiply 294 one by one, that is, divide the number from the smallest. If it is an even number, divide it by 2 and then divide it by 2 to get 147. If it is not an even number, try whether 3 is divisible, continue to divide, and find that it is finally.

294=2*3*7*7, we can separate two identical ones and keep the different multiplication. The answer is that 7 is the square root of 6.