Question

rg

Answer 1

Ta có: \(4\sqrt{x}-\frac{\left(x+6\sqrt{x}+9\right)\left(\sqrt{x}-3\right)}{x-9}\cdot\sqrt{x^2-4x+4}\)

\(=4\sqrt{x}-\frac{\left(\sqrt{x}+3\right)\left(x-9\right)}{x-9}\cdot\sqrt{\left(x-2\right)^2}\)

\(=4\sqrt{x}-\left(\sqrt{x}+3\right)\cdot\left|x-2\right|\)