5(9x^2-4)=0

Solution for 5(9x^2-4)=0 equation:

Simplifying
5(9x2 + -4) = 0

Reorder the terms:
5(-4 + 9x2) = 0
(-4 * 5 + 9x2 * 5) = 0
(-20 + 45x2) = 0

Solving
-20 + 45x2 = 0

Solving for variable 'x'.

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

Add '20' to each side of the equation.
-20 + 20 + 45x2 = 0 + 20

Combine like terms: -20 + 20 = 0
0 + 45x2 = 0 + 20
45x2 = 0 + 20

Combine like terms: 0 + 20 = 20
45x2 = 20

Divide each side by '45'.
x2 = 0.4444444444

Simplifying
x2 = 0.4444444444

Take the square root of each side:
x = {-0.666666667, 0.666666667}