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JEE Advanced Mathematics question

MathematicsTrigonometric EquationsJEE Advanced

Not in JEE Main syllabus

is satisfied by

Answer: (A),(C)

Solution

Using and , the exponents are

2x+2x+1 and 2-2x-2x.

Let . The second term is . So

y+=28\ ⇒\ -28y+27=0\ ⇒\ y=1=\ or\ y=27=.

Hence $2x+2x

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Question ID VK-108584