3 (sin x – cos x)^4 + 6 (sin x + cos x)^2 + 4 (sin^6 x + cos^6 x) = _______.
3 (sin x – cos x)4 + 6 (sin x + cos x)2 + 4 (sin6 x + cos6 x) = _______.
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3 (sin x – cos x)4 + 6 (sin x + cos x)2 + 4 (sin6 x + cos6 x) = _______.