Question

Giúp mình với ạ

Answer 1

a: \(E=\dfrac{x+2-x+\sqrt{x}-1}{x\sqrt{x}+1}\cdot\dfrac{4\sqrt{x}}{3}\)

\(=\dfrac{\sqrt{x}+1}{x\sqrt{x}+1}\cdot\dfrac{4\sqrt{x}}{3}=\dfrac{4\sqrt{x}}{3\left(x-\sqrt{x}+1\right)}\)

b: E=8/9

=>\(\dfrac{4\sqrt{x}}{3x-3\sqrt{x}+3}=\dfrac{8}{9}\)

=>\(24x-24\sqrt{x}+24=36\sqrt{x}\)

=>24x-60căn x+24=0

=>căn x=2 hoặc căn x=1/2

=>x=1/4 hoặc x=4