MCQ
A quadratic equation $ax^2+ bx + c = 0$ has real and equal roots, if :
- A$ b^2-4 a c>0 $
- ✓$ b^2-4 a c=0 $
- C$ b^2-4 a c<0 $
- DNone of these
✓
Answer
Correct option: B.
$ b^2-4 a c=0 $
A quadratic equation $ax^2+ bx + c = 0$ has real and equal roots, if $ b^2-4 a c=0 $
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