He has been a news eporter in the Dallas-Fort Worth area and has taught a class on the Kennedy Assassination at University of Texas at Arlington.
Marrs' books include:
... b/(2a) from both sides, we get <math>x=\frac{-b}{2a}\pm\frac{\sqrt{b^2-4ac}}{2a}=\frac{-b\pm\sqrt{b^2-4ac}}{2a}.</math> Generalizations ...