Question

rút gọn

A = (\(\frac{3\sqrt{x}}{\sqrt{x}+3}\)+ \(\frac{\sqrt{x}}{\sqrt{x}-3}\)- \(\frac{3x+3}{x-9}\)) : (\(\frac{2\sqrt{x}-2}{\sqrt{x}-3}\)-1)

Answer 1

\(\left(\frac{3\sqrt{x}\left(\sqrt{x}-3\right)+\sqrt{x}\left(\sqrt{x}+3\right)-3x-3}{\left(\sqrt{x}+3\right)\left(\sqrt{x}-3\right)}\right).\frac{\sqrt{x}-3}{2\sqrt{x}-2-\sqrt{x}+3}\)

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

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

voi dk \(x\ge0\) ; \(x\ne9\) ;\(x\ne1\)