30. If u and Bare zeroes of the x? ...
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30. If u and Bare zeroes of the x? + 7x + 7, find the value of +-2aB P 1R-1D

11th - 12th Class
Maths
Solution
41
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2) ( alpha operatorname{and} beta ) are ( x^{2}+7 x+7 ) ( frac{1}{2}+frac{1}{beta}-2 alpha beta ) ( x^{2}+7 x+7 ) [ begin{array}{l}x+beta=frac{-6}{a}=frac{-7}{1}=-7 x beta=frac{c}{a}=frac{7}{1}=7 frac{1}{2}+frac{1}{8}-2 alpha beta frac{2+p}{2 beta}-2 alpha beta =frac{-7}{7}-1-14=-15end{array} ]
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