Question

rút gọn vs ạ 

Answer 1

\(=\dfrac{\left(\sqrt{x}-2\right)\left(\sqrt{x}+2\right)+\sqrt{x}-1-2\sqrt{x}+5}{\left(\sqrt{x}+2\right)\left(\sqrt{x}-1\right)}\)

\(=\dfrac{x-4-\sqrt{x}+4}{\left(\sqrt{x}+2\right)\left(\sqrt{x}-1\right)}=\dfrac{\sqrt{x}}{\sqrt{x}+2}\)