Centuries: 9th century - 10th century - 11th century
Decades: 910s - 920s - 930s - 940s - 950s - 960s - 970s - 980s - 990s - 1000s - 1010s
Years: 960 961 962 963 964 965 966 967 968 969
... We get <math>\left(x+\frac{b}{2a}\right)^2=\frac{-4ac+b^2}{4a^2}=\frac{b^2-4ac}{4a^2}.</math> Taking square roots of bo ...