9=c^2

Solution for 9=c^2 equation:

Simplifying
9 = c2

Solving
9 = 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.
9 + -1c2 = c2 + -1c2

Combine like terms: c2 + -1c2 = 0
9 + -1c2 = 0

Add '-9' to each side of the equation.
9 + -9 + -1c2 = 0 + -9

Combine like terms: 9 + -9 = 0
0 + -1c2 = 0 + -9
-1c2 = 0 + -9

Combine like terms: 0 + -9 = -9
-1c2 = -9

Divide each side by '-1'.
c2 = 9

Simplifying
c2 = 9

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