3x^2-1=6561

Solution for 3x^2-1=6561 equation:

Simplifying
3x2 + -1 = 6561

Reorder the terms:
-1 + 3x2 = 6561

Solving
-1 + 3x2 = 6561

Solving for variable 'x'.

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

Add '1' to each side of the equation.
-1 + 1 + 3x2 = 6561 + 1

Combine like terms: -1 + 1 = 0
0 + 3x2 = 6561 + 1
3x2 = 6561 + 1

Combine like terms: 6561 + 1 = 6562
3x2 = 6562

Divide each side by '3'.
x2 = 2187.333333

Simplifying
x2 = 2187.333333

Take the square root of each side:
x = {-46.768935556, 46.768935556}