y=sin^2x + 3sin2x + 3cos^2x

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y=sin^2x + 3sin2x + 3cos^2x

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Neala 1 year 2020-10-21T15:34:41+00:00 0 Answers 40 views 0

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )