đề sai

chứng minh ngược lại C/m:>10

căn2<can3<can 4=>

1/căn2>1/căn3>1/căn4

1/căn2+1/can3+1/Căn4>3/can4=3/2

1/can5+....+1/can9>5.1/can9=5/3

1/can10+...+1/can16>7/can16=7/4

...

1/can81+...1/can100>18.1/can100= 19/10

A>B=1+3/2+5/3+7/4+...+19/10>10

x:2=4

x=4.2

x=8

VI. Viết lại các câu sau sao cho nghĩa không đổi

1. "Can you carry these chairs into the house?"

Mrs Lan asked me ...........................................................................

2. "Please give me your book?"

He told me .......................................................................................

3. You shouldn't make noise in class."

The teacher said .............................................................................

4. "Can you help Tam with his English pronunciation?"

Mr Hung asked me ..........................................................................

5. My hobbies are playing sports and reading books

I love ................................................................................................

6. She was born on May 10th, 1996

Her birthday .....................................................................................

7. Nga must wash the dishes everyday

Nga has ...........................................................................................

8. We began to study English 4 years ago

We have ..........................................................................................

9. No one in class is as tall as Tam

Tam is the ........................................................................................

10. Women often did the house work without the help of modern equipment in the past In the past women used

7:3,5=2

702:7,2=97,5

9:4,5=2

2:12,5=0,16

tk nhé