Cho biểu thức \(M=5x.\left(x+y\right)-x+10-y\). Tính giá trị của biểu thức M tại x.(x+1)=0 và y=3

Dùng các thuật ngữ: "tổng", "hiệu", "tích", "thương", "bình phương",......... để đọc các biểu thức sau:

a) x-10

b) \(3x^2\)

c) (x+2).(x-2)

Viết các biểu thức đại số để diễn đạt các ý sau: Tổng các bình phương của a và b

Viết lại câu sao cho nghĩa câu không thay đổi:

1) In spite of having a lot of progress in our study, we still need to try harder

=> Although .......................................................................................................

2) John was absent from class yesterday because of his serious illness

=> Because ............................................................................................

3) Because the little boy behaved badly, his teacher punished him

=> Because of ......................................................................................

4) We arrived on time although the flight was delayed half an hour

=> Despite ..................................................................................................

5) If John hadn't made the mistake, we wouldn't have lost the game

=> Because of ..........................................................................................

6) How long haven't you seen Marie?

=> When ...............................................

7) The students had done poorly on the test so the teacher decided to give it again

=> Since .........................................................................................................................

8) In spite of her financial difficulty, she tried to finish her study at university

..............................................................................................................................

Viết lại câu sao cho nghĩa không thay đổi:

1) In spite of having to work the next day, Tom watched films on DVD still midnight

Even though ........................................................................................................................

2) The ending of the film was quite disappointing

We ............................................................................

3) Although she performed well, she didn't receive good comments from critics

Despite her ..............................................................................................................

4) We were so interested in the comedy that we laughed from beginning to end

The comedy ............................................................................................................

5) I'm frightened by horror films; however, I enjoy watching them

In spite .....................................................................................................

Viết lại câu sao cho nghĩa của câu không đổi:

1) She has been nominated for Best Actress five times. She has never won once

=> In spite of ..........................................................................................................

2) This is his first role. His acting is excellent

=> This is .........................................................

3) The film didn't receive good investment. The film was a great success

=> Despite ....................................................................................................

4) It is a horror film. He laughed a lot

=> Although ...........................................

5) The story of the film wasn't good. I enoyed the acting

=> Although .........................................................................