a) (-26) + (-32)   b) 57 + 264   c) (-267) + (-473)   d) (-5) +8

=-(26 + 32)         =321             =-(267 + 473)         =8-5

=-58                                        =-740                     =3

e) 1000 + (-327)    f) (-5679) + 5679   g) (-2364) + (-175)

=1000-327             =0                          =- (2364 + 175)

=673                                                    =-2539

h) 136 + (-36)

=136 - 36

=100

Câu 8: B

Câu 7: B

Câu 6: D

Cau 5: B

Câu 4: \(\left\lbrack\left(x-3\right)^2+7\right\rbrack\cdot2=14\)

=>\(\left(x-3\right)^2+7=14:2=7\)

=>\(\left(x-3\right)^2=0\)

=>x-3=0

=>x=3

=>Chọn B

Câu 3: D

Câu 2: Số số hạng của dãy số là:

(99-1):2+1=98:2+1=49+1=50(số)

Tổng của dãy số là:

\(\left(99+1\right)\cdot\frac{50}{2}=100\cdot\frac{50}{2}=50\cdot50=2500\)

=>Chọn B

Câu 1: B

trình bày ra nhé :)

ai hiểu

1.

⇒ He doesn't work as hard as me

⇒ He is lazier than me.

2. 

⇒ Your bedroom is more uncomforable than my bedroom.

⇒ Your bedroom is not as comfortable as my bedroom.

3. 

⇒ Mary speaks English better than John.

⇒ Mary doesn't speak English as worse as John.

4. No boy in my class are as intelligent as Jack.

5. They suggest that he should play football.

1. -> He doesn't work as hard as me.

    -> He works lazier than me.

2. -> Your bedroom isn't as comfortable as mine.

    -> Your bedroom is uncomfortable than mine.

3. -> Mary speaks English better than John.

   -> Mary doesn't speak English as bad as John.

4. -> No boy is as intelligent as Jack in my class.

5. -> They suggest playing football. 

Ai lại lười thế,tự làm đi

k chỉ thì thui tự nhiên nhắn chi z

2. grandparents
3. single
4. single
5. daughter
6. surname 

husband (chồng) - grandparents (ông bà) - single (độc thân) - daughter (con gái) - surname (tên họ)