Answer: \(\left(\frac{2\sqrt{x}}{\sqrt{x}+3}+\frac{\sqrt{x}}{\sqrt{x}-3}-\frac{3x+3}{x-9}\right):\frac{\sqrt{x}+1}{\sqrt{x}-3}\) \(=[\frac{2\sqrt{x}\left(\sqrt{x}-3\right)}{\left(\sqrt{x}+3)(\sqrt{x}-3\right)}+\frac{\sqrt{x}\left(\sqrt{x}+3\right)}{\left(\sqrt{x}-3\right)\left(\sqrt{x}+3\right)}-\frac{3\left(x+1\right)}{\left(\sqrt{x}-3\right)\left(\sqrt{x}+3\right)}]:\frac{\sqrt{x}+1}{\sqrt{x}-3}\) \(=\frac{2x-6+x+3\sqrt{x}-3x-3}{\left(\sqrt{x}+3\right)\left(\sqrt{x}-3\right)}:\frac{\sqrt{x}+1}{\sqrt{x}-3}\) \(=\frac{3\sqrt{x}-9}{\left(\sqrt{x}+3\right)\left(\sqrt{x}-3\right)}:\frac{\sqrt{x}+1}{\sqrt{x}-3}\) \(=\frac{3\left(\sqrt{x}-3\right)}{\left(\sqrt{x}+3\right)\left(\sqrt{x}-3\right)}:\frac{\sqrt{x}+1}{\left(\sqrt{x}-3\right)}\) \(=\frac{3}{\sqrt{x}+3}:\frac{\sqrt{x}-3}{\sqrt{x}+1}\) \(=\frac{3\left(\sqrt{x}-3\right)}{\left(\sqrt{x}+3\right)\left(\sqrt{x}+1\right)}\) Câu trả lời: Answer: \(\left(\frac{2\sqrt{x}}{\sqrt{x}+3}+\frac{\sqrt{x}}{\sqrt{x}-3}-\frac{3x+3}{x-9}\right):\frac{\sqrt{x}+1}{\sqrt{x}-3}\) \(=[\frac{2\sqrt{x}\left(\sqrt{x}-3\right)}{\left(\sqrt{x}+3)(\sqrt{x}-3\right)}+\frac{\sqrt{x}\left(\sqrt{x}+3\right)}{\left(\sqrt{x}-3\right)\left(\sqrt{x}+3\right)}-\frac{3\left(x+1\right)}{\left(\sqrt{x}-3\right)\left(\sqrt{x}+3\right)}]:\frac{\sqrt{x}+1}{\sqrt{x}-3}\) \(=\frac{2x-6+x+3\sqrt{x}-3x-3}{\left(\sqrt{x}+3\right)\left(\sqrt{x}-3\right)}:\frac{\sqrt{x}+1}{\sqrt{x}-3}\) \(=\frac{3\sqrt{x}-9}{\left(\sqrt{x}+3\right)\left(\sqrt{x}-3\right)}:\frac{\sqrt{x}+1}{\sqrt{x}-3}\) \(=\frac{3\left(\sqrt{x}-3\right)}{\left(\sqrt{x}+3\right)\left(\sqrt{x}-3\right)}:\frac{\sqrt{x}+1}{\left(\sqrt{x}-3\right)}\) \(=\frac{3}{\sqrt{x}+3}:\frac{\sqrt{x}-3}{\sqrt{x}+1}\) \(=\frac{3\left(\sqrt{x}-3\right)}{\left(\sqrt{x}+3\right)\left(\sqrt{x}+1\right)}\)

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nguyễn quang đạt

26 tháng 12 2021 - olm

AE help mình vs!!

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Yen Nhi

1 tháng 1 2022

Answer:

\(\left(\frac{2\sqrt{x}}{\sqrt{x}+3}+\frac{\sqrt{x}}{\sqrt{x}-3}-\frac{3x+3}{x-9}\right):\frac{\sqrt{x}+1}{\sqrt{x}-3}\)

\(=[\frac{2\sqrt{x}\left(\sqrt{x}-3\right)}{\left(\sqrt{x}+3)(\sqrt{x}-3\right)}+\frac{\sqrt{x}\left(\sqrt{x}+3\right)}{\left(\sqrt{x}-3\right)\left(\sqrt{x}+3\right)}-\frac{3\left(x+1\right)}{\left(\sqrt{x}-3\right)\left(\sqrt{x}+3\right)}]:\frac{\sqrt{x}+1}{\sqrt{x}-3}\)

\(=\frac{2x-6+x+3\sqrt{x}-3x-3}{\left(\sqrt{x}+3\right)\left(\sqrt{x}-3\right)}:\frac{\sqrt{x}+1}{\sqrt{x}-3}\)

\(=\frac{3\sqrt{x}-9}{\left(\sqrt{x}+3\right)\left(\sqrt{x}-3\right)}:\frac{\sqrt{x}+1}{\sqrt{x}-3}\)

\(=\frac{3\left(\sqrt{x}-3\right)}{\left(\sqrt{x}+3\right)\left(\sqrt{x}-3\right)}:\frac{\sqrt{x}+1}{\left(\sqrt{x}-3\right)}\)

\(=\frac{3}{\sqrt{x}+3}:\frac{\sqrt{x}-3}{\sqrt{x}+1}\)

\(=\frac{3\left(\sqrt{x}-3\right)}{\left(\sqrt{x}+3\right)\left(\sqrt{x}+1\right)}\)

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