J
jet_nguyen


TÌM A, B, C
[TEX]\frac{x^2-5}{x^2-3x+2}=\frac{A}{x-2}+\frac{Bx+C}{x^2+2x+1}[/TEX]
[TEX]\frac{x^2-5}{x^2-3x+2}=\frac{A}{x-2}+\frac{Bx+C}{x^2+2x+1}[/TEX]
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