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vineetnegi (107)

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Olaaa!! Perrrfect answer. 19  [25 rates]

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if a,b,c are sides of triangle
proove
a^2(p-q)(p-r)+b^2(q-r)(q-p)+c^2(r-p)(r-q)
cannot be negative;p,q,r being any real quantities
(higher algebra :H.S halls)

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