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ngocbhbg2003
2 năm trước
Cho biểu thức A = ( ($\frac{\sqrt{x} }{\sqrt{x}-1} $ - $\frac{1}{x-\sqrt{x} }$ ) : $\frac{1}{\sqrt{x} -1}$ a) Tìm điều kiện xác định và rút gọn biểu thức A b) Tìm tất cả các giá trị của x sao cho A < 0
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