OD P O DOTOOD - ------- --- - - - 3...
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OD P O DOTOOD - ------- --- - - - 31, If a and B are the zeroes of x2 + 5x + 7,find the value of a-1 + B-1 P L e .. . nobis for 4x2 5 2

11th - 12th Class
Maths
Solution
36
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( x^{2}+5 x+7 ) Valves of ( alpha^{-1}+beta^{-1} ) ( quad quad quad frac{1}{alpha}+frac{1}{beta}=frac{alpha+beta}{alpha beta} ) ( alpha+beta=frac{-b}{a}=frac{Phi-5}{1}=-5 ) ( alpha beta=frac{7}{1}=7 ) ( frac{alpha+beta}{2 beta}=frac{-5}{7} ) ( alpha^{1}+beta^{1}=-5 / 7 )
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