Answers

2016-03-22T12:06:10+05:30
Delta = 0    real and equal                                                                                          delta > 0    real and distinct                                                                                       delta < 0    no real roots                                                                                               b2 -4ac is called discriminate..
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2016-03-24T06:24:03+05:30
Yes,for an example , x^2 - 2x + 4 = 0 the real root is - 2 and 4.If there are no real root,how we can calculate other root?Am I right?
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I dont care if I dont get the brainliest,but I'm worry if u didnt understand what I am trying to teach you