Giải hệ phương trình:

\(\left\{{}\begin{matrix}x\left(2x-2y-1\right)=3\left(y+2\right)\\3y+6\sqrt{2x-1}=y^2-x+23\end{matrix}\right.\)

Các đại thần ơi ra tay giúp đỡ vs huhu sắp nộp rồi ạ!!! :((((

Tìm m để hệ phương trình \(\left\{{}\begin{matrix}x+2y=5m-1\\-2x+y=2\end{matrix}\right.\) có nghiệm (x;y) thoả mãn \(\sqrt{x}+\sqrt{y}=\sqrt{2}\)

Helppp meee!

Cho phương trình x²+mx+n=0

Tìm m, n để phương trình có hai nghiệm thoả mãn \(\left\{{}\begin{matrix}x_1-x_2=1\\x^3_1-x^3_2=7\end{matrix}\right.\)#

Giúp mik với mik đang cần rất gấp huhuhu!!!

14. who -> which

15. to organize -> organizing

16. happy -> happily

Chúc bạn học tốt nhe

I. 

1. A

2.B

3. B

II.

1.C

2.C

1. Some of Bill's classmates are invited to his birthday party.

2. They asked him what he would do to help his mother

3. If you go to the link, you can find many useful things for your group work.

4. I wish Paul could go on the trip with us.

5. Men drive more carefully than women do.

6. Although my grandpa is old, he leads an active life.