Question

( 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 )

# 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

Solution