Tìm x biết:

x(x+5)(x-5)-(x+2)(x^2-2x+4)=42

Mình cần đề ôn tập giữa kì 2 toán 8,ai có cho mình xin vs ạ

Bài 1: Bài tập chia động từ quá khứ đơn

On Friday, the children ___ (talk) about a day out together in the country. The next morning, they ___ (go) to the country with their two dogs and ___ (play) together. Ben and Dave ___ (have) some kites. Some time later the dogs (be) not there. So they ___ (call) them and ____ (look) for them in the forest. After half an hour the children ____ (find) them and ___ (take) them back. Charlie ___ (be) very happy to see them again. At lunch time Nick ___ (go) to the bikes and ___ (fetch) the basket with some meat sandwiches. Then they ___ (play) football. Nick and Dave ____ (win). In the evening they ___ (ride) home.

Bài 5: Hoàn thành các câu sau:

1.I'm afraid I _________________________ (not/ be) able to come tomorrow.

2. Because of the train strike, the meeting _________________________ (not/ take) place at 9 o'clock.

3. A: “Go and tidy your room.”

B: “I _________________________ (not/ do) it!”

4. If it rains, we _________________________ (not/ go) to the beach.

5. In my opinion, she _________________________ (not/ pass) the exam.

6. A: “I'm driving to the party, would you like a lift?”

B: “Okay, I _________________________ (not/ take) the bus, I'll come with you.”

7. He _________________________ (not/ buy) the car, if he can't afford it.

8. I've tried everything, but he _________________________ (not/ eat).

9. According to the weather forecast, it _________________________ (not/ snow) tomorrow.

10. A: “I'm really hungry.”

B: “In that case we _________________________ (not/ wait) for John.

Bài 5: Hoàn thành các câu sau:

1.I'm afraid I _________________________ (not/ be) able to come tomorrow.

2. Because of the train strike, the meeting _________________________ (not/ take) place at 9 o'clock.

3. A: “Go and tidy your room.”

B: “I _________________________ (not/ do) it!”

4. If it rains, we _________________________ (not/ go) to the beach.

5. In my opinion, she _________________________ (not/ pass) the exam.

6. A: “I'm driving to the party, would you like a lift?”

B: “Okay, I _________________________ (not/ take) the bus, I'll come with you.”

7. He _________________________ (not/ buy) the car, if he can't afford it.

8. I've tried everything, but he _________________________ (not/ eat).

9. According to the weather forecast, it _________________________ (not/ snow) tomorrow.

10. A: “I'm really hungry.”

B: “In that case we _________________________ (not/ wait) for John.

a song song với b.Tính XMY biết MN song song với A

mn lm giúp mik với ạ