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conakry2732002
2 năm trước
Giair pt với a,b,c là tham số (GẤP LẮM Ạ) $\frac{1}{2}$( $\frac{x-a}{bc}$+ $\frac{x-b}{ca}$+ $\frac{x-c}{ab}$ )=$\frac{1}{a}$ +$\frac{1}{b}$ +$\frac{1}{c}$
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