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vuminhduong1211
2 năm trước
Rút gọn biểu thức A = ($\frac{\sqrt[]{x}}{\sqrt[]{x}+3}$ - 1 ): ( $\frac{1}{x+\sqrt[]{x}-6}$ + $\frac{\sqrt[]{x}+3}{\sqrt[]{x}-2}$ - $\frac{\sqrt[]{x}-2}{\sqrt[]{x}+3}$ )
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