81+36=c(c)

Solution for 81+36=c(c) equation:

Simplifying
81 + 36 = c(c)

Combine like terms: 81 + 36 = 117
117 = c(c)

Multiply c * c
117 = c2

Solving
117 = 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.
117 + -1c2 = c2 + -1c2

Combine like terms: c2 + -1c2 = 0
117 + -1c2 = 0

Add '-117' to each side of the equation.
117 + -117 + -1c2 = 0 + -117

Combine like terms: 117 + -117 = 0
0 + -1c2 = 0 + -117
-1c2 = 0 + -117

Combine like terms: 0 + -117 = -117
-1c2 = -117

Divide each side by '-1'.
c2 = 117

Simplifying
c2 = 117

Take the square root of each side:
c = {-10.816653826, 10.816653826}