3x(3x)-4=23

Solution for 3x(3x)-4=23 equation:

Simplifying
3x(3x) + -4 = 23

Remove parenthesis around (3x)
3x * 3x + -4 = 23

Reorder the terms for easier multiplication:
3 * 3x * x + -4 = 23

Multiply 3 * 3
9x * x + -4 = 23

Multiply x * x
9x2 + -4 = 23

Reorder the terms:
-4 + 9x2 = 23

Solving
-4 + 9x2 = 23

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + 9x2 = 23 + 4

Combine like terms: -4 + 4 = 0
0 + 9x2 = 23 + 4
9x2 = 23 + 4

Combine like terms: 23 + 4 = 27
9x2 = 27

Divide each side by '9'.
x2 = 3

Simplifying
x2 = 3

Take the square root of each side:
x = {-1.732050808, 1.732050808}