P
phantom1996


Giải phương trình:
[TEX] 0 =\2{\sin ^2}x\ - \sqrt 2 \sin(x - \frac{\pi }{4})\ + \(\sin x - \cos x)^2\[/TEX]
[TEX] 0 =\2{\sin ^2}x\ - \sqrt 2 \sin(x - \frac{\pi }{4})\ + \(\sin x - \cos x)^2\[/TEX]
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