c^2-9-18=0

Solution for c^2-9-18=0 equation:

Simplifying
c2 + -9 + -18 = 0

Reorder the terms:
-9 + -18 + c2 = 0

Combine like terms: -9 + -18 = -27
-27 + c2 = 0

Solving
-27 + c2 = 0

Solving for variable 'c'.

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

Add '27' to each side of the equation.
-27 + 27 + c2 = 0 + 27

Combine like terms: -27 + 27 = 0
0 + c2 = 0 + 27
c2 = 0 + 27

Combine like terms: 0 + 27 = 27
c2 = 27

Simplifying
c2 = 27

Take the square root of each side:
c = {-5.196152423, 5.196152423}