81x^2-196=0

Solution for 81x^2-196=0 equation:

Simplifying
81x2 + -196 = 0

Reorder the terms:
-196 + 81x2 = 0

Solving
-196 + 81x2 = 0

Solving for variable 'x'.

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

Add '196' to each side of the equation.
-196 + 196 + 81x2 = 0 + 196

Combine like terms: -196 + 196 = 0
0 + 81x2 = 0 + 196
81x2 = 0 + 196

Combine like terms: 0 + 196 = 196
81x2 = 196

Divide each side by '81'.
x2 = 2.419753086

Simplifying
x2 = 2.419753086

Take the square root of each side:
x = {-1.555555555, 1.555555555}