Decades: 30s BC 20s BC 10s BC 0s BC 0s - 10s - 20s 30s 40s 50s 60s
Years: 7 8 9 10 11 - 12 - 13 14 15 16 17
Births
Deaths
For the number 12, see twelve.
... this means that the parabola intersects the x-axis in two points.) If the discriminant is negative, then there are two different solutions x, both of which ...