4=K^2

Solution for 4=K^2 equation:

Simplifying
4 = K2

Solving
4 = K2

Solving for variable 'K'.

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

Add '-1K2' to each side of the equation.
4 + -1K2 = K2 + -1K2

Combine like terms: K2 + -1K2 = 0
4 + -1K2 = 0

Add '-4' to each side of the equation.
4 + -4 + -1K2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -1K2 = 0 + -4
-1K2 = 0 + -4

Combine like terms: 0 + -4 = -4
-1K2 = -4

Divide each side by '-1'.
K2 = 4

Simplifying
K2 = 4

Take the square root of each side:
K = {-2, 2}