Question

Giúp mình với ạ!! 

Answer 1

a: \(A=3+2\sqrt{2}-2\sqrt{2}+2=5\)

\(B=\dfrac{3\sqrt{x}-2\sqrt{x}+2}{\sqrt{x}\left(\sqrt{x}-1\right)}\cdot\dfrac{\sqrt{x}-1}{1}=\dfrac{\sqrt{x}+2}{\sqrt{x}}\)

b: B<=A

=>\(\dfrac{\sqrt{x}+2-5\sqrt{x}}{\sqrt{x}}< =0\)

=>-4 căn x<=-2

=>căn x>=1/2

=>x>=1/4