Giai giup tui pt : sin^2 x + sin^ 2x +sin^ 3x + sin^ 4x = 2
hứa vote 5 sao + cám ơn
Giai giup tui pt : sin^2 x + sin^ 2x +sin^ 3x + sin^ 4x = 2 hứa vote 5 sao + cám ơn
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Giai giup tui pt : sin^2 x + sin^ 2x +sin^ 3x + sin^ 4x = 2
hứa vote 5 sao + cám ơn
Calantha
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