(3x)0.20*(3x)-1.20=

Solution for (3x)0.20*(3x)-1.20= equation:

Simplifying
(3x) * 0.20(3x) + -1.20 = 0

Remove parenthesis around (3x)
3x * 0.20(3x) + -1.20 = 0

Remove parenthesis around (3x)
3x * 0.20 * 3x + -1.20 = 0

Reorder the terms for easier multiplication:
3 * 0.20 * 3x * x + -1.20 = 0

Multiply 3 * 0.20
0.6 * 3x * x + -1.20 = 0

Multiply 0.6 * 3
1.8x * x + -1.20 = 0

Multiply x * x
1.8x2 + -1.20 = 0

Reorder the terms:
-1.20 + 1.8x2 = 0

Solving
-1.20 + 1.8x2 = 0

Solving for variable 'x'.

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

Add '1.20' to each side of the equation.
-1.20 + 1.20 + 1.8x2 = 0 + 1.20

Combine like terms: -1.20 + 1.20 = 0.00
0.00 + 1.8x2 = 0 + 1.20
1.8x2 = 0 + 1.20

Combine like terms: 0 + 1.20 = 1.2
1.8x2 = 1.2

Divide each side by '1.8'.
x2 = 0.6666666667

Simplifying
x2 = 0.6666666667

Take the square root of each side:
x = {-0.816496581, 0.816496581}