ĐK:x>0; x\(\ne1\)
\(P=\left(\dfrac{1+\sqrt{x}}{\sqrt{x}\left(\sqrt{x}-1\right)}\right):\dfrac{\sqrt{x}}{\left(\sqrt{x}-1\right)^2}\)
\(=\dfrac{\sqrt{x}+1}{\sqrt{x}}.\dfrac{\sqrt{x}-1}{\sqrt{x}}\)
\(=\dfrac{x-1}{x}\)
=(1/✓x(✓x-1) + 1/✓x-1 ):✓x/(x+1)^2
=(1/√x(√x+1)+√x/√x(√x-1) *(√x+1)^2
=1+√x / √x(√x+1) *(√x-1)^2 /√x
=x-1/x