Answers

2014-06-07T16:57:03+08:00
The roots are all Imaginary numbers
which are:
X = - \frac{5}{2} -  \frac{ \sqrt{3} }{2} i

X = - \frac{5}{2} + \frac{ \sqrt{3} }{2} i

so the is no real root
2 4 2