Centuries: 1st century - 2nd century - 3rd century
Decades: 60s 70s 80s 90s 100s - 110s - 120s 130s 140s 150s 160s
Years: 113 114 115 116 117 - 118 - 119 120 121 122 123
Events:
Births:
Deaths:
... x to the quadratic equation <math>ax^2+bx+c=0</math> in terms of the coefficients a, b and c, which are assumed to be real (but see below fo ...