Answer:
8
I really hope this helped! :D
Step-by-step explanation:
X squared is equal to 64.
That also means X is the square root of 64.
8*8=64
8 Is the square root of 64, meaning it's also X.
Remember, when you square a number, you multiply it to itself.
8^2= 8*8
4^2=4*4
2^2= 2*2
So on, so forth.