`H = (1+sqrt{x}/(x+1)) :(1/(sqrt{x}-1) -(2sqrt{x})/(x sqrt{x}+sqrt{x}-x-1)) (ĐKXĐ: x >= 0; x ne -1; x ne 1)`

`H = (x+sqrt{x}+1)/(x+1) : [1/(sqrt{x}-1) -(2sqrt{x})/(sqrt{x}(x+1) -(x+1))]`

`H = (x+sqrt{x}+1)/(x+1) : [1/(sqrt{x}-1) -(2sqrt{x})/((x+1)(sqrt{x}-1))]`

`H = (x+sqrt{x}+1)/(x+1) :[(x+1)/((x+1)(sqrt{x}-1)) -(2sqrt{x})/((x+1)(sqrt{x}-1))]`

`H = (x+sqrt{x}+1)/(x+1) :(x-2sqrt{x}+1)/((x+1)(sqrt{x}-1))`

`H = (x+sqrt{x}+1)/(x+1) : (sqrt{x}-1)^2/((x+1)(sqrt{x}-1))`

`H = (x+sqrt{x}+1)/(x+1) :(sqrt{x}-1)/(x+1)`

`H = (x+sqrt{x}+1)/(x+1) *(x+1)/(sqrt{x}-1)`

`H = (x+sqrt{x}+1)/(sqrt{x}-1)`

`\ttcolor{#00FF00}{#}\ttcolor{#00EE00}{b}\ttcolor{#00DD00}{u}\ttcolor{#00CC00}\ttcolor{#00BB00}{i}\ttcolor{#00AA00}{g}\ttcolor{#009900}{i}\ttcolor{#008800}{a}\ttcolor{#007700}{p}\ttcolor{#006600}{h}\ttcolor{#005500}{o}\ttcolor{#004400}{n}\ttcolor{#003300}\ttcolor{#002200}{g}\ttcolor{#001100}{999}`