Question

# In a quadratic equation ax2 + bx +c , if D = 0, then find the roots,   −b2a,−b2a b2a,−b2a c2a,−c2a 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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