First try to break up your values as perfect squares we know that 2x 25 = 50 So putting them under the radical to square root is
✔️25 x ✔️2 is the same as ✔️50, but square of 25 is 5 so it comes outside the radical and you are left with 5✔️2. Sorry I dont have or know where myvsquare root sign is on my iphone keypad. The answer is A.?