solve the quadratic x2-22x=11 using completing the square
x^2 - 22 x = 11
(22/2)^2 = 121
x^2 - 22 x + 121 = 132
(x-11)^2 = 132
x = 11 +/- sqrt(132)
x = 11 +/- 2 sqrt(33)
(22/2)^2 = 121
x^2 - 22 x + 121 = 132
(x-11)^2 = 132
x = 11 +/- sqrt(132)
x = 11 +/- 2 sqrt(33)