(6c)(6c)=20

Solution for (6c)(6c)=20 equation:

Simplifying
(6c)(6c) = 20

Remove parenthesis around (6c)
6c(6c) = 20

Remove parenthesis around (6c)
6c * 6c = 20

Reorder the terms for easier multiplication:
6 * 6c * c = 20

Multiply 6 * 6
36c * c = 20

Multiply c * c
36c2 = 20

Solving
36c2 = 20

Solving for variable 'c'.

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

Divide each side by '36'.
c2 = 0.5555555556

Simplifying
c2 = 0.5555555556

Take the square root of each side:
c = {-0.745355993, 0.745355993}