Rút gọn biểu thức \(P = \frac{{3x + \sqrt {9x} - 3}}{{x + \sqrt x - 2}} - \frac{{\sqrt x + 1}}{{\sqrt x + 2}} - \frac{{\sqrt x - 2}}{{\sqrt x - 1}}.\) Tìm \(x\) để \(P = 3.\)
A.\(P = \frac{\sqrt{x} + 1}{\sqrt{x} - 1}\,\,;\,\,\,x = 4\)
B.\(P = \frac{\sqrt{x} - 1}{\sqrt{x} + 1}\,\,;\,\,\,x = 4\)
C.\(P = \frac{\sqrt{x} + 2}{\sqrt{x} - 1}\,\,;\,\,\,x = \frac{25}{4}\)
D.\(P = \frac{\sqrt{x} + 2}{\sqrt{x} + 1}\,\,;\,\,\,x = \frac{1}{4}\)
A.\(P = \frac{\sqrt{x} + 1}{\sqrt{x} - 1}\,\,;\,\,\,x = 4\)
B.\(P = \frac{\sqrt{x} - 1}{\sqrt{x} + 1}\,\,;\,\,\,x = 4\)
C.\(P = \frac{\sqrt{x} + 2}{\sqrt{x} - 1}\,\,;\,\,\,x = \frac{25}{4}\)
D.\(P = \frac{\sqrt{x} + 2}{\sqrt{x} + 1}\,\,;\,\,\,x = \frac{1}{4}\)
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Hóa Học lớp 12
