2((3x*3x)-0.75)=180

Solution for 2((3x*3x)-0.75)=180 equation:

Simplifying
2((3x * 3x) + -0.75) = 180

Reorder the terms for easier multiplication:
2((3 * 3x * x) + -0.75) = 180

Multiply 3 * 3
2((9x * x) + -0.75) = 180

Multiply x * x
2((9x2) + -0.75) = 180

Reorder the terms:
2(-0.75 + (9x2)) = 180
(-0.75 * 2 + (9x2) * 2) = 180
(-1.5 + 18x2) = 180

Solving
-1.5 + 18x2 = 180

Solving for variable 'x'.

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

Add '1.5' to each side of the equation.
-1.5 + 1.5 + 18x2 = 180 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 18x2 = 180 + 1.5
18x2 = 180 + 1.5

Combine like terms: 180 + 1.5 = 181.5
18x2 = 181.5

Divide each side by '18'.
x2 = 10.08333333

Simplifying
x2 = 10.08333333

Take the square root of each side:
x = {-3.17542648, 3.17542648}