Rút gọn B=\(\dfrac{4}{\sqrt{x}+1}+\dfrac{2}{1-\sqrt{x}}-\dfrac{\sqrt{x}-5}{x-1}\)

Tìm x để B>\(\dfrac{1}{2}\)

Rút gọn A=\(\left(\dfrac{x+7\sqrt{x}+12}{x+3\sqrt{x}}+\dfrac{x-3\sqrt{x}}{\sqrt{x}-3}+3\right).\dfrac{1}{\sqrt{x}+2}\)

1."My daughter is getting married in summer"

➝Sarah revealed

2.''The girls helped with the housework"'Alice said

➝Alice told me

3.''We didn't enjoy the show''.My friends told me

➝My friend said

"We haven't finished the project yet".They said

➝They said

1."I was expecting the promotion"Peter told us

➝Peter told us

2."We were dancing at 9 o'clock".My sister said

➝My sister said

3."It was raining in the morning".Dad said

➝Dad told us

Rút gọn

A=\(\left(\dfrac{5a-\sqrt{a}}{\sqrt{a}}-4\sqrt{a}\right).\dfrac{1}{\sqrt{a}}-\dfrac{1}{\sqrt{a}}\)

Rút gọn 

Q=\(\left(\dfrac{\sqrt{x}+1}{\sqrt{x}-2}-\dfrac{2\sqrt{x}}{\sqrt{x}+2}+\dfrac{5\sqrt{x}+2}{4-x}\right):\dfrac{3\sqrt{x}-x}{x+4\sqrt{x}+4}\)