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If 4^(sin2x + 2cos^2x) +4^(1 - sin2x + 2sin^2x) = 65, then (sin2x + cos2x) has the value equal to

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If 4(sin2x 2cos 2x)  +4(1 - sin2x 2sin2x)  = 65, then (sin2x + cos2x) has the value equal to

(A) –1 

(B) 2 

(C) √2 

(D) cosπ

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1 Answer

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Correct option (A) –1

Explanation:

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