=>(2x+1)(x-1)=0

=>x=-1/2 hoặc x=1

tik nha

- A lô, mày hả?
- Ừ, tao nè. Có gì không?
- Lâu quá không về thăm trường rồi, đi với tao không?
- Ok. Kiki

Thế là chúng em trở về trường cũ. "Ôi" một tiếng "ôi" của em cũng đủ để các bạn nghĩ về ngôi trường 10 năm sau như thế nào. Ngôi trường 10 năm sau thay đổi quá nhiều!

Cổng trường đổ sập, tất cả đổ sập vì bị sóng thần. Mọi thứ trở về cát bụi. Không còn gì tả! Hết.

tik nha

a: 

=>15x+2=62

=>x=4

b: 

=>x+1=1

hay x=0

tik nha

47. Peter/ suggest/ go/ the seaside/ summer holiday.
A. Peter suggest going to the seaside this summer holiday.
B. Peter suggest to go to the seaside this summer holiday.
C. Peter suggests going to the seaside this summer holiday.
D. Peter suggests to go to the seaside this summer holiday.
48. The students/ study/ for exam/ now.
A. The students is studying for their exam now.
B. The students are studying for their the exam now.
C. The students are study for their exam now.
D. The students are studying for their exam now.
49.disappointed / film / entertaining / expected
A.We were disappointed as the film was more entertaining than we expected.
B.We felt disappointed as the film was less entertaining than we had expected.
C. We felt disappointed just because the film was entertaining as we expected.
D. We were disappointed, so the film was more entertaining than we had expected.
50. It / important / keep/ environment / clean.
A. It’s very important keeping the environment clean.
B. It’s very important to keep an environment clean.
C. It’s very important to keep the environment to clean.
D. It’s very important to keep the environment clean.

tik nha

Câu 1: D

Câu 2: D

tik nha

a 1176

b 4664

tik nha

Bài 21: B

Bài 23: C

Bài 31: A

tik nha

''đéo''tin

cậu cũng thế còn j

còn j