9x^2+4-12=0

Solution for 9x^2+4-12=0 equation:

Simplifying
9x2 + 4 + -12 = 0

Reorder the terms:
4 + -12 + 9x2 = 0

Combine like terms: 4 + -12 = -8
-8 + 9x2 = 0

Solving
-8 + 9x2 = 0

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + 9x2 = 0 + 8

Combine like terms: -8 + 8 = 0
0 + 9x2 = 0 + 8
9x2 = 0 + 8

Combine like terms: 0 + 8 = 8
9x2 = 8

Divide each side by '9'.
x2 = 0.8888888889

Simplifying
x2 = 0.8888888889

Take the square root of each side:
x = {-0.942809042, 0.942809042}