CBSE Class 10 Answered
Quadratic Equation
Asked by chahat | 11 Mar, 2009, 12:16: AM
Expert Answer
when the roots of a quadratic are equal, then the discriminant is equal to zero.
in this case,
a=k, b= -10, c=5
So, D=(10*10)-(20k)=0
So,
100-20k=0
k=5
Answered by | 12 Mar, 2009, 09:11: AM
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