20x^2-4=0

Solution for 20x^2-4=0 equation:

Simplifying
20x2 + -4 = 0

Reorder the terms:
-4 + 20x2 = 0

Solving
-4 + 20x2 = 0

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 + 20x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + 20x2 = 0 + 4
20x2 = 0 + 4

Combine like terms: 0 + 4 = 4
20x2 = 4

Divide each side by '20'.
x2 = 0.2

Simplifying
x2 = 0.2

Take the square root of each side:
x = {-0.447213596, 0.447213596}