P = (√x + 1)/(x - 1) - (x + 2)/(x. √x - 1) - (√x + 1)/(x + √x + 1)
= (√x + 1)(x + √x + 1)/(x - 1)(x + √x + 1) - (x + 2)/(x - 1)(x + √x + 1) - (√x + 1)(x - 1)/(x - 1)(x + √x + 1)
=x√x+x+x+√x+√x+1-x-2-x√x-x+√x+1/(x - 1)(x + √x + 1)
=3√x/(x - 1)(x + √x + 1)