November 13Ray Mancini defeats Duk Koo Kim by knockout in 14 rounds in a tragic fight. Kim died five days later and the fight's outcome brought many new resolutions to boxing.
... to both sides, getting
<math>x^2+\frac{b}{a}x+\frac{b^2}{4a^2}=-\frac{c}{a}+\frac{b^2}{4a^2}.</math>
The left side is now a perfect square; it is the ...