B
berry1234


[TEX]y = \frac{sinx + 2cosx + 1}{sinx + cosx - 2}[/TEX]
[TEX]y = ( 2sinx + cosx)( 2cosx - sinx)[/TEX]
[TEX]y = tan^2x + tan^2y[/TEX]
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[TEX]y = ( 2sinx + cosx)( 2cosx - sinx)[/TEX]
[TEX]y = tan^2x + tan^2y[/TEX]
to rat kham phuc cac ban tren hocmai.vn nen cac ban lam nhanh nhe:khi (162)::khi (110):thank!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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