(25x^2)-4=0

Solution for (25x^2)-4=0 equation:

Simplifying
(25x2) + -4 = 0

Reorder the terms:
-4 + (25x2) = 0

Solving
-4 + (25x2) = 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 + (25x2) = 0 + 4

Combine like terms: -4 + 4 = 0
0 + (25x2) = 0 + 4
(25x2) = 0 + 4

Combine like terms: 0 + 4 = 4
(25x2) = 4

Divide each side by '25'.
x2 = 0.16

Simplifying
x2 = 0.16

Take the square root of each side:
x = {-0.4, 0.4}