37. If `alpha` and `beta` are the roots of `ax^2 + bx + c = 0`, then the value of `(a alpha + b)^-2 + (abeta+ b)^-2`is equal to

37. If alpha and beta are the roots of ax^(2)+bx+c=0, then the value of (a alpha+b)^(-2)+(a beta+b)^(-2) is equal to

If alpha and beta are the roots of equation ax^2 + bx + c = 0, then the value of alpha/beta + beta/alpha is

If alpha and beta are the roots of ax^(2)+bx+c=0 then the value of the expression (a alpha+b)^(-3)+(a beta+b)^(-3) is equal to

if alpha and beta are the roots of ax^(2)+bx+c=0 then the value of {(1)/(a alpha+b)+(1)/(a beta+b)} is

If alpha, beta are the roots of the equation ax ^(2) + bx + c =0, then the value of (1)/( a alpha + b) + (1)/( a beta + b) equals to : a) (ac)/(b) b) 1 c) (ab)/(c) d) (b)/(ac)

IF alpha , beta are the roots of ax ^2 + bx + c=0 then ( a alpha + b )^(-3) + ( a beta + b ) ^(-3)=