4=18x^2

Solution for 4=18x^2 equation:

Simplifying
4 = 18x2

Solving
4 = 18x2

Solving for variable 'x'.

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

Add '-18x2' to each side of the equation.
4 + -18x2 = 18x2 + -18x2

Combine like terms: 18x2 + -18x2 = 0
4 + -18x2 = 0

Add '-4' to each side of the equation.
4 + -4 + -18x2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -18x2 = 0 + -4
-18x2 = 0 + -4

Combine like terms: 0 + -4 = -4
-18x2 = -4

Divide each side by '-18'.
x2 = 0.2222222222

Simplifying
x2 = 0.2222222222

Take the square root of each side:
x = {-0.471404521, 0.471404521}