January 22 - Buddy Holly records some acoustic demos in his New York City apartment. These songs would be the last songs recorded by Holly. Songs included "Peggy Sue Got Married," "Crying, Waiting, Hoping," "Learning the Game," "What to Do," "That's What They Say" and "That Makes it Tough."
... is not 2. (In a field of characteristic 2, the element 2a is zero and it is impossible to divide by it.)
The symbol
<math>\pm \sqrt {b^2-4ac}</math>
in ...