Answers

2014-07-02T20:42:09+08:00
According to the quadratic formula, the roots of a quadratic equation can be solved by:
x = [-b +- sqrt(b^2 - 4ac)]/2a

This formula can give us at most of 2 roots. Why? 

It can only be either x = [-b + sqrt(b^2 - 4ac)]/2a or x = [-b - sqrt(b^2 - 4ac)]/2a


6 2 6