Founded in 1923 in Spain.
Held by SEPI, a Spanish holding company (99.8%).
Member of EADS since 1999.
... denominator is 4a2. 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 both ...