A) \[\frac{-(p+q+r)}{2}\]
B) \[\frac{-p+q+r}{2}\]
C) \[-(p+q+r)\]
D) \[-p+q+r\]
Correct Answer: A
Solution :
Let the roots be \[\alpha ,\beta ;\beta ,\gamma \]and \[\gamma ,\alpha \]respectively. \[\therefore \,\,\,\,\,\alpha +\beta =-p,\ \beta +\gamma =-q,\gamma +\alpha =-r\] Adding all, we get\[\Sigma \alpha =-(p+q+r)/2\]etc.You need to login to perform this action.
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