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May 11, 2015 at 19:16 comment added Michael E2 It seems you might not have received the traditional welcome, which I extended to you above. I noticed you haven't accept any answers to your questions. Please consider whether any of the attempts to help you deserve this token reward.
May 11, 2015 at 19:15 comment added Michael E2 Welcome to Mathematica.SE! I suggest the following: 1) As you receive help, try to give it too, by answering questions in your area of expertise. 2) Read the faq! 3) When you see good questions and answers, vote them up by clicking the gray triangles, because the credibility of the system is based on the reputation gained by users sharing their knowledge. Also, please remember to accept the answer, if any, that solves your problem, by clicking the checkmark sign!
Apr 23, 2015 at 19:31 comment added gurluk @Mahdi no, only real roots.
Apr 23, 2015 at 19:23 comment added Mahdi If $d \neq 0$, $x$ can be only complex number. Do you want to count complex roots too?
Apr 23, 2015 at 19:21 answer added kirma timeline score: 3
Apr 23, 2015 at 19:09 history asked gurluk CC BY-SA 3.0