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Cho biểu thức

a) Rút gọn biểu thức P

b) Tính giá trị của P khi x = 9

c) Tìm giá trị nhỏ nhất của P

P = \(\frac{x^2-9}{x-3}+\frac{4-4\sqrt{x}+x}{2-\sqrt{x}}+\frac{4-x}{2+\sqrt{x}}\)

Complete each of the follow sentences with a phrasal verb from the box . Change the form of the verbs if necessary

apply for , cheer up, dress up , find out , get over , go on , pull down , set up , take off , turn back

1. We’ve ... a really good restaurant near the central station

2. You don’t need to... to go to the mall - jeans and T - shirt are fine

3. Professor Colin Evers ... a job at a famous university in Sydney

4. We really can’t ... living like this - we’ll have to find a bigger house

5. Mary was very unhappy last week , but she has cheer up now

6. You need to ... your shoes before going inside the house

7. They ... the old cinema to build a new shopping mall

8. A committee has been ... to organize social events for the students

9. It took me a few days to ... my flu

10. The mountain climbers had to ... because they were exhausted

Rewrite the sentences using the words in brackets

1. Despite her dislikes for coffee , she drank it to keep herself warm ( although)

2. Mary will take a plane , even though she dislikes flying ( in spite of)

3. In spite of Marcy’s sadness at losing the contest , she managed to smile ( although )

4. We took many pictures though the sky was cloudy (despite)

5. Despite her poor memory, the old woman told interesting stories to the children ( even though)

6. Though he has been absent frequently , he has managed to pass the test ( in spite of )

7. Nancy told me the secret despite having promised not to do so ( though )

8. We plan to buy a ticket for the drawing although we know we will not win a prize (even though)

9. In spite of the high price , my daughters insist on going to the movies every Saturday ( even though)

10. He ate the chocolate cake even though he is on a diet ( in spite of)

11. He left school because his life was hard ( because of)

12. John succeeded in his exam because of his hard and methodical work ( because)

13. We didn’t want to go out because of the heavy rain (because)

14. Although he had much experience in machinery, he didn’t succeed in repairing this machine ( despite)

15. In spite of the darkness , they continued to work (though)

Cộng đồng các quốc gia độc lập đời ?

Cho tam giác ABC tù có góc A = 35 độ ; góc B bằng 29 độ ; BC = 12cm ; AB = y ; AC = x

Tìm x , y

Cách làm kẻ đường vuông góc từ C đến cạnh AB