Giúp mình bài này với ạ!!! Không áp dụng định lí cosin ạ !

( 4x - 9 ) . ( 2,5 + -7/3x ) =0

Exercise 3. Checking conjunctions 1. He has made a lot of mistakes in his writing because his carelessness. 2. They had to sell their house because of they needed money. 3. People are not allowed to enter the park after midnight because lack of security. 4. In spite of my father is old, he still goes to work. 5. In spite the danger, they managed to cross the river during the night. 6. We haven’t seen each other from we left school. 7. Although Nam worked very hard, but he didn’t pass the final exam. 8. Dinosaurs became extinct millions of years ago because of the earth's climate changed drastically. 9. It was not when he talked to her that he knew the truth. 10. Although taking a taxi, Bill arrived late for the concert. 11.When many of my friends take a shower in the morning, I usually take one before bed. 12. Although it was raining, Anna didn’t take her swimming lesson.

Phân tích đa thức thành nhân tử. Mong các bạn giúp đỡ

Tìm số tự nhiên có tận cùng bằng 3, biết rằng nếu xóa chữ số hàng đơn vị thì số đó giảm đi 1992 đơn vị

Từ câu 40-43 nhee, cảm ơn gấtt nhiều:3

:vt calli:ốp la nl:............................

Viết lại câu • is phong nha the most beautiful cave in Viet Nam ? = > The tourist asked....

cho đa thức `A(x)=(x-1)(x+2)(x+4)(x+7)+2076` và `B(x)=x^2+6x+2` Tìm số dư của phép chia đa thức `A(x)` cho `B(x)`

mn giúp e vs ạ cảm ơn nhiều nha