9=X^2

Solution for 9=X^2 equation:

Simplifying
9 = X2

Solving
9 = X2

Solving for variable 'X'.

Move all terms containing X to the left, all other terms to the right.

Add '-1X2' to each side of the equation.
9 + -1X2 = X2 + -1X2

Combine like terms: X2 + -1X2 = 0
9 + -1X2 = 0

Add '-9' to each side of the equation.
9 + -9 + -1X2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -1X2 = 0 + -9
-1X2 = 0 + -9

Combine like terms: 0 + -9 = -9
-1X2 = -9

Divide each side by '-1'.
X2 = 9

Simplifying
X2 = 9

Take the square root of each side:
X = {-3, 3}