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Find the least positive value of `x` satisfying `(sin^2 2x+4sin^4x-4sin^2xcos^2x)/4=1/9`

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Find the least positive value of `x` satisfying `(sin^2 2x+4sin^4x-4sin^2xcos^2x)/4=1/9`
A. `pi//3`
B. `pi//6`
C. `2pi//3`
D. `5pi//6`
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Correct Answer - B
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