tìm điều kiện xác định

\(\dfrac{x}{x+2}\)+\(\sqrt{x-2}\)

tìm điều kiện xác định

\(\dfrac{1}{13-2x}\)

tìm điều kiện xác định

√2x^2+4x+5

tìm điều kiện xác định
√-x^2+2x-1

1.“Why didn’t you put the wrapper in the dustbin?” she said to the boy.

-> She asked the boy

2.They will widen the gate to let the cars run into the yard easily.

-> The gate .............................................................................................................

3. The last time he visited Da Nang was five years ago.

-> He hasn’t ...........................................................................................................

4. Having a video conference at work is very useful for people.

-> It’s ......................................................................................................................

5.She said    “I am leaving here tomorrow”      

-> She said that………………………………………………………

1. I can’t  come because I have to help my dad with something.

If…………………………………………………………………………………..

2.The land is polluted.The farmers are unable to grow crops.

If…………………………………………………………………………………………

3. The workers have just built a new bridge here

 A new bridge...............................................................................................................

4. “I will hand in my assignment to the teacher tomorrow”.

  He said......................................................................................................................

5. " How many planets are there in the Solar System?

Phong asked his teacher..............................................................................................

6.Before I went to bed , I had done my homework

After…………………………………………………………………………………………

7. I'm not you, but I think you should recycle these plastic carrier bags.

-> If .........................................................................................................................