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trthutrang30
2 năm trước
Cho biểu thức: B = √ ( $\frac{1}{√x-1}$ - $\frac{√x}{x-1}$ ) : $\frac{1}{√x+1}$ (với x ≥ 0; x $\neq$ 1) a) Rút gọn biểu thức B b) Tìm tất cả giá trị của x để B > 0 chỗ √x-1 thật ra là √x - 1 nha mà nhờ mọi người làm hộ nhanh nhanh ạ em còn mỗi phần này là em chịu thôi :vv
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