4=c^2

Solution for 4=c^2 equation:

Simplifying
4 = c2

Solving
4 = c2

Solving for variable 'c'.

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

Add '-1c2' to each side of the equation.
4 + -1c2 = c2 + -1c2

Combine like terms: c2 + -1c2 = 0
4 + -1c2 = 0

Add '-4' to each side of the equation.
4 + -4 + -1c2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -1c2 = 0 + -4
-1c2 = 0 + -4

Combine like terms: 0 + -4 = -4
-1c2 = -4

Divide each side by '-1'.
c2 = 4

Simplifying
c2 = 4

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