JEE Advanced Mathematics question

MathematicsQuadratic Equations and InequalitiesJEE Advanced

If the equation is satisfied by every real value of then the number of possible values of the triplet is

Answer: (D)

Solution

Put , :

+x-1)+-x)=1-x+-+-1)=0 .

This holds for all ( takes more than one value) iff

-=

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Question ID VK-108533