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4 If p, q and r are real numbers, then rootsof the equation(x-p) (x-q)+ (x - q) (x-r)+ (x-p) (x-r) = 0are equal, if(1) p 1, q 1, r= 0(2) p q=r(3) p 1, q 0, r= 0(4) q=1, r- 1

Answer» 4 If p, q and r are real numbers, then rootsof the equation(x-p) (x-q)+ (x - q) (x-r)+ (x-p) (x-r) = 0are equal, if(1) p 1, q 1, r= 0(2) p q=r(3) p 1, q 0, r= 0(4) q=1, r- 1


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