Jonathan is correct answer.
Since, tama is told that discriminant is negative, there is no real solutions but , it has two complex roots.
![\"\"](\"/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0e5fdda631749830049bee24c1ec85ae.png\")
, it has two complex roots.![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/solution.JPG\")