\(x+y+x+4=2\sqrt{x-2}+4\sqrt{y-3}+6\sqrt{z-5}\)

\(\sqrt{x+2+\sqrt{2x+5}}+\sqrt{x+2+3\sqrt{2x-5}}=7\sqrt{2}\)

\(\frac{x}{2\sqrt{x}-3\sqrt{y}}\)

\(\frac{4-\sqrt{3}}{5\sqrt{2}-2\sqrt{5}}\)

entences with two objects :

1. The teacher gave each of us two exercise books .

2. Someone will tell him that news .

3.They have sent enough money to these poor boys .

4.They have given the women in most coutries in the world the right to vote.

5.They paid me a lot of money to do the job .

Change the following sentences from active into passive form.

2. Wh _ questions.

1.Wheredo people speak English?

2.How can they open this safe?

3.Why didn't they mend the roof before it fell in?

4.Who wrote that novel?

Change the following sentences from active into passive form.

2. Wh _ questions.

1. When will you do the work ?

2. How many days did she spend finishing the work ?

3. How do you spend this amount of money ?

4. What books are people reading this year ?

5. How did the police find the lost man ?

16. Who looked after the children for you ?

17. How long have they waited for the doctor ?

18. What time can the boys hand in their paper ?

19. Why didn't they help him ?

20. Who are they keeping in the kitchen ?

2.

a.\(\sqrt{x-2+\sqrt{2x-5}+\sqrt{x+2+3\sqrt{2x-5}}=7\sqrt{2}}\)

b.\(x+y+z+4=2\sqrt{x-2}+4\sqrt{y-3}+6\sqrt{z-5}\)

1.Rút gọn:

a.\(2\sqrt{3x}-\sqrt{48x}+\sqrt{108x}+\sqrt{3x}\)

b.\(2\sqrt{25xy}+\sqrt{5}\sqrt{45x^3y^3}-3y\sqrt{16x^3y}\)

c.\(\frac{2}{\sqrt{3}-1}+\frac{3}{\sqrt{3}-2}+\frac{12}{3-\sqrt{3}}\)

d.\(\frac{1}{\sqrt[]{3}-\sqrt{2}}-\frac{2}{\sqrt{3}+\sqrt{5}}-\frac{3}{\sqrt{5}-\sqrt{2}}+\frac{4}{\sqrt{7}+\sqrt{3}}\)

1.Rút gọn:

a.\(\frac{3}{4+\sqrt{9+4\sqrt{5}}}\)

b.\(\frac{1}{\sqrt{2\sqrt{3}+\sqrt{2}}}\)

c.\(\frac{4-\sqrt{3}}{5\sqrt{2}-2\sqrt{5}}\)

d.\(\frac{x}{2\sqrt{x}-3\sqrt{y}}\)