A polymath is a person who excels in multiple fields, particularly in both arts and sciences. Another term for this is Renaissance man, as many notable polymaths lived during the European Renaissance period.
... fraction; the common 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 ...