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Question

In a quadratic equation ax2 + bx +c , if D = 0, then find the roots,
 


  1. b2a,b2a

  2. b2a,b2a

  3. c2a,c2a

  4. c2a,c2a


Solution

The correct option is A

b2a,b2a


The  roots of a quadratic equation are given as x=b±D2a

if D = 0, the equation reduces to,
x=b±02ax=b2a,b2a
Thus, the roots are real and equal.

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