if `alpha` and `beta` are the roots of the equation `p(x^2+n^2)+pnx+qn^2x^2=0` then the value of `p(alpha^2+beta^2)+palphabeta+qalpha^2beta^2` is

If alpha and beta are the roots of the equation x^(2) -x+7=0 , then find the value of alpha^(2) + beta^(2) .

If alpha and beta are the roots of the equation x^2 + 2x +8=0 then the value of (alpha)/(beta) + (beta)/(alpha) is ………………….. .

If alpha and beta are the roots of the equation x^2-px + q = 0 then the value of (alpha+beta)x -((alpha^2+beta^2)/2)x^2+((alpha^3+beta^3)/3)x^3+... is