25x^2-129=0

Solution for 25x^2-129=0 equation:

Simplifying
25x2 + -129 = 0

Reorder the terms:
-129 + 25x2 = 0

Solving
-129 + 25x2 = 0

Solving for variable 'x'.

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

Add '129' to each side of the equation.
-129 + 129 + 25x2 = 0 + 129

Combine like terms: -129 + 129 = 0
0 + 25x2 = 0 + 129
25x2 = 0 + 129

Combine like terms: 0 + 129 = 129
25x2 = 129

Divide each side by '25'.
x2 = 5.16

Simplifying
x2 = 5.16

Take the square root of each side:
x = {-2.271563338, 2.271563338}