If a, b are the roots of quadratic equation `x^2 + px+q=0` and g,d are the roots of `x^2+ px-r- 0`, then (a-g). (a-d) is equal to:

If alpha, beta are the roots of quadratic equation x^(2)+px+q=0 and gamma, delta are the roots of x^(2)=px+r=0, then (alpha-gamma).(alpha-delta) is equal to

If alpha, beta are the roots of the quadratic equation x ^(2)+ px+q=0 and gamma, delta are the roots of x ^(2)+px-r =0 then (alpha- gamma ) (alpha -delta ) is equal to :

If alpha, beta are the roots of the quadratic equation x ^(2)+ px+q=0 and gamma, delta are the roots of x ^(2)+px-r =0 then (alpha- gamma ) (alpha -delta ) is equal to :

if alpha,beta are the roots of quadratic equation x^(2)+px+q=0 then gamma,delta are the roots of x^(2)+px-r=0, then (alpha-gamma)(alpha-delta)

If alpha and beta are the roots of quadratic equation x^(2)+px+q=0 and gamma and delta are the roots of x^(2)+px-r=0 then (alpha-gamma)(alpha-delta)

If p and q are the roots of the equation x^(2)+px+q=0 , then