7x^2-1=636

Solution for 7x^2-1=636 equation:

Simplifying
7x2 + -1 = 636

Reorder the terms:
-1 + 7x2 = 636

Solving
-1 + 7x2 = 636

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 + 7x2 = 636 + 1

Combine like terms: -1 + 1 = 0
0 + 7x2 = 636 + 1
7x2 = 636 + 1

Combine like terms: 636 + 1 = 637
7x2 = 637

Divide each side by '7'.
x2 = 91

Simplifying
x2 = 91

Take the square root of each side:
x = {-9.539392014, 9.539392014}