9(2x^2-1)=0

Solution for 9(2x^2-1)=0 equation:

Simplifying
9(2x2 + -1) = 0

Reorder the terms:
9(-1 + 2x2) = 0
(-1 * 9 + 2x2 * 9) = 0
(-9 + 18x2) = 0

Solving
-9 + 18x2 = 0

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 18x2 = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 18x2 = 0 + 9
18x2 = 0 + 9

Combine like terms: 0 + 9 = 9
18x2 = 9

Divide each side by '18'.
x2 = 0.5

Simplifying
x2 = 0.5

Take the square root of each side:
x = {-0.707106781, 0.707106781}