x2 = 64?
you need to have x by its self on on e side of the equation. You can do this by taking the square root of each side.
Good answer Guest #1.
Example: If you have x^2 = 25......
\(x^2=25\\ x=\pm\sqrt{25}\\ \;\;=\pm 5\\ \therefore\text{ x = 5 or x = -5}\)