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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 11: a) sin²x – 3 sin x+2=0 b) √3cos 2 x + sin 2x-√3=0 Giúp mình với ạ

Toán Lớp 11: a) sin²x – 3 sin x+2=0
b) √3cos 2 x + sin 2x-√3=0
Giúp mình với ạ

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222-9+11+12:2*14+14 = ? ( )