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[(p-q)x^(2)+5(p+q)x-2(p-q)=0" are real a...

[(p-q)x^(2)+5(p+q)x-2(p-q)=0" are real and unequal "],[" If the roots of the equation "(c^(2)-ab)x^(2)-2(a^(2)-bc)x+b^(2)-ac=0" are equal,prove that "],[" elther "a=0" or "a^(3)+b^(3)+c^(3)=3abc]

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If the roots of the equation (c^(2)-ab)x^(2)-2(a^(2)-bc)x+b^(2)-ac=0 are equal,prove that either a=0 or a^(3)+b^(3)+c^(3)=3abc

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If p, q, are real and p ne q then the roots of the equation (p-q) x^(2)+5(p+q) x-2(p-q)=0 are