MCQ
A quadratic equation $ax^2+ bx + c = 0$ has real and distinct roots, if :
  • A
    None of these
  • B
    $ b^2-4 a c<0 $
  • C
    $ b^2-4 a c=0 $
  • $ b^2-4 a c>0 $

Answer

Correct option: D.
$ b^2-4 a c>0 $
A quadratic equation $ax^2+ bx + c = 0$ has real and distinct roots, if $ b^2-4 a c>0 $

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