Relative clause exercise:

1) Which

1. The letter hasn't arrived yet. I posted it three days ago

➜The letter.............

2. The sweets are delicious. I bought them yeserday

➜The sweets.........

3. I gave you a book. It had many pictures

➜I gave you a book............

4. That's the dictionary. Bill gave it to me for Chrismas

➜That's the dictionary...........

5. I'm reading a book. I bought it in 1996

➜I'm reading a book.........

6. The street leads to my school. It is very dirty in rainy seasons

➜The street.........

7. The noval read two days ago. It had 450 pages

➜The noval.............

8. The computer is old. I have used it for 10 years

➜The computer.........

9. The car parked in front of my house. It had black

➜The car.............

giúp mk vs ạ mk cần gấp

(3) cho bt: P= \(\dfrac{2\sqrt{x}}{\sqrt{x}+3}+\dfrac{\sqrt{x}}{\sqrt{x}-3}+\dfrac{3x+9}{9-x}\)

a) rút gọn P

b) tìm điều kiện của x để P>0

c) tìm x nguyên để P nhận giá trị nguyên

giúp mk vs ạ mai mk hc rồi

(3) cho bt P= \(\dfrac{2\sqrt{x}}{\sqrt{x}+3}+\dfrac{\sqrt{x}}{\sqrt{x}-3}+\dfrac{3x+9}{9-x}\)

a) rút gọn P

b) tìm điều kiện của x  để P >0

c) tìm x nguyên để P nhận giá trị nguyên

giúp mk vs ạ

(2) giải pt:

a) \(\sqrt{4-2x}=5\)

b) \(\sqrt{25\left(x+1\right)}+\sqrt{9x+9}=16\)

\(\sqrt{4x^2+12x+9}=4\)

giúp mk vs ạ mai mk hc rồi

(1) rút gọn biểu thức:

a) A= \(3\sqrt{2}+5\sqrt{8}-2\sqrt{50}\)

b) B= \(\sqrt{7-4\sqrt{3}}+\sqrt{12+6\sqrt{3}}\)

c) C= \(\dfrac{1}{3+\sqrt{5}}+\dfrac{1}{3-\sqrt{5}}\)

d) D= \(\sqrt[3]{27}-\sqrt[3]{-8}-\sqrt[3]{125}\)

giúp mk vs ạ mai mk hc rồi

(2) giải pt:

a) \(3-\sqrt{2-3x}=0\)

b) \(\sqrt{x^2+6x+9}=3\)

(4)  cho △ABC vuông tại A, đg cao AH, BH= 2cm, BC= 8cm

a) tính AB, AC, AH, \(\widehat{B}\)

b) từ H kẻ HM ⊥AB, HN ⊥AC. c/m: \(AM.AB=HB.HC\) và \(AM.AB+AN.NC=MN^2\)

giúp mk vs ạ mk cần gấp

(1) tính

a) \(\sqrt{3}+2\sqrt{12}+4\sqrt{75}-\sqrt{300}\)

b) \(2\sqrt{20}+\sqrt{\left(1-\sqrt{5}\right)^2}-\dfrac{20}{\sqrt{5}+1}\)

c) \(\dfrac{6}{\sqrt{13}-1}+\dfrac{6}{\sqrt{13}+1}\)

d) \(\sin^238^0+\cot23^0+\sin^252^0-\tan67^0\)

giúp mk vs ạ mai mk hc rồi

(1) tính

a) \(\sqrt{3}+2\sqrt{12}+4\sqrt{75}-\sqrt{300}\)

b) \(2\sqrt{20}+\sqrt{\left(1-\sqrt{5}\right)^2}-\dfrac{20}{\sqrt{5}+1}\)

c) \(\dfrac{6}{\sqrt{13}-1}+\dfrac{6}{\sqrt{13}+1}\)

d) \(\sin^238^0+\cot23^0+\sin^252^0-\tan67^0\)

giúp mk vs ạ mai mk hc rồi