Question 540649
x^2-22x-4

x^2-22x+121-4 =121

x^2-22x+121=121+4

(x-11)^2=125

(x-11)^2=25*(5)

Take the square root on both sides

x-11= +/- 5sqrt(5)

x=11+5sqrt(5)
OR
x=11-5sqrt(5)