40 Ifa. Bare the roots of quadratic equation x2 + px +q=0 and y,8 are the roots of x + px -r=0, then («- »)-(4-5) is equal to :

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( left(alpha_{r}-gammaright)-(alpha-delta)=frac{8-gamma}{2} ) ( gamma, delta ) are roots ob ( x^{2}+p x-r=0 ) ( gamma=frac{-p+sqrt{p^{2}-4 r}}{2} ) [ begin{aligned} delta &=-p-frac{sqrt{p^{2}-4 r}}{2} f-gamma &=pm sqrt{p^{2}-4 r} end{aligned} ]

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