cái này mà lớp 7 trời

Bài 5: 

a: \(f\left(x\right)=4x^4-x^3-4x^2+x-1\)

\(g\left(x\right)=x^4+4x^3+x-5\)

b: \(f\left(x\right)-g\left(x\right)=4x^4-x^3-4x^2+x-1-x^4-4x^3-x+5\)

\(=3x^4-5x^3-4x^2+4\)

\(f\left(x\right)+g\left(x\right)=4x^4-x^3-4x^2+x-1+x^4+4x^3+x-5\)

\(=5x^4+3x^3-4x^2+2x-6\)

C

B

D

6 A

7 C

8 D

c

b

d

My uncle moved to HCMC in 1987 and has lived there since then

is used to make cheese and butter

Lan if she would visit him the day after

is very wonderful to play sports in the summer

to go fishing when he was young

early enough to see the opening of the match

35/ My uncle moved to Ho Chi Minh City in 1987 and lived there since then.
36/ Milk is used to make cheese and butter.
37/ Ba asked Lan if she would visit him the next day.
38/ It is very wonderful to play sports in the summer.
39/ My grandfather used to go fishing when he was young.
40/ I wasn't early enough to see the opening of the match.

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mn giúp mink 

mn giúp mink nha

=>(-4) x y -5= -9

=>(-4) x y= -4

=> y=1

bề mặt TĐK rất rộng.+ Sự thông khí do => sự co giãn của túi khí (khi bay)

 => Sự thay đổi thể tích lồng ngực ( khi đậu)

Chắc là sai rồi Không chắc lắm

The car isn't repaired by William

Some sandwiches weren't bought by us

1. The cake was put on the red table yesterday.

2. This hat was made for his girlfriend last Monday.

3. A lot of friends were had in Ho Chi Minh City 3 years ago.

4. He was taken to see Tri Nguyen aquarium by his uncle last week.

C tick cho e vs nhek! (E lớp 6 ak; vì cái này e hc ở Trung tâm rồi nên e giúp c nhek ak)

giúp mik zới nhoa

Đ

S

Đ

Đ

a. S

b. S

c. Đ

d. Đ