11x^2-800=91

Solution for 11x^2-800=91 equation:

Simplifying
11x2 + -800 = 91

Reorder the terms:
-800 + 11x2 = 91

Solving
-800 + 11x2 = 91

Solving for variable 'x'.

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

Add '800' to each side of the equation.
-800 + 800 + 11x2 = 91 + 800

Combine like terms: -800 + 800 = 0
0 + 11x2 = 91 + 800
11x2 = 91 + 800

Combine like terms: 91 + 800 = 891
11x2 = 891

Divide each side by '11'.
x2 = 81

Simplifying
x2 = 81

Take the square root of each side:
x = {-9, 9}