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Toán Lớp 11: Giải các pt sau $a, 3sin^{2}x +8sinxcosx + 4cos^{2}x = 0$ $b, 3sin^{2}x – 2sin2x + cos^{2}x = 0$

Home/ Toán Lớp 11: Giải các pt sau $a, 3sin^{2}x +8sinxcosx + 4cos^{2}x = 0$ $b, 3sin^{2}x – 2sin2x + cos^{2}x = 0$

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