If square root x +square root of 9 equal to square root of 64 what is the value of x?

 Answer: 25

Step 1: We can find that the square root of 9 is 3, and 64 is 8. 

Step 2: Subtract 3 on both sides

Step 3: The question asks us to find the value of x, so square both sides.

Step 4: X = 25.