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JEE Advanced Mathematics question

MathematicsComplex NumbersJEE Advanced

If then

Answer: (A),(D)

Solution

(Take .) Square both sides and use :

+Missing argument for \bar\bar +Missing argument for \bar\bar =-Missing argument for \bar\bar -Missing argument for \bar\bar

⇒ Missing argument for \bar\bar +Missing argument for \bar\bar +Missing argument for \bar\bar +Missing argument for \bar\bar =Missing argument for \bar\bar -Missing argument for \bar\bar -Missing argument for \bar\bar +Missing argument for \bar\bar ⇒ Missing argument for \bar\bar +Missing argument for \bar\bar =0 .

Divide by :

+

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Question ID VK-108141