9.86=X^2

Solution for 9.86=X^2 equation:

Simplifying
9.86 = X2

Solving
9.86 = 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.
9.86 + -1X2 = X2 + -1X2

Combine like terms: X2 + -1X2 = 0
9.86 + -1X2 = 0

Add '-9.86' to each side of the equation.
9.86 + -9.86 + -1X2 = 0 + -9.86

Combine like terms: 9.86 + -9.86 = 0.00
0.00 + -1X2 = 0 + -9.86
-1X2 = 0 + -9.86

Combine like terms: 0 + -9.86 = -9.86
-1X2 = -9.86

Divide each side by '-1'.
X2 = 9.86

Simplifying
X2 = 9.86

Take the square root of each side:
X = {-3.140063694, 3.140063694}