a .

a.     =x³ -x²-4x²+4x+4x-4=(x-1)(x²-4x+4)=(x-1)(x-2)²

b.     =x³+x²-6x²-6x+9x+9=(x+1)(x-3)²

c.      =x³+x²+7x²+7x+10x+10=(x+1)(x+2)(X+5)

d.     =x⁴+x³+x³+x²+x+1=x³(x+1)+x²(x+1)+x+1=(x+1)(x³+x²+x)=x(x+1)(x²+x+1).Ok

I/                                                             II,

1,community                                             1,A.An->The  

2,culture                                                    2,B.to communicate->communicating

3,northern                                                  3,B.well->better    

4,terrace                                                     4,A.What->Which

                                                                   5,B.collect->collecting

1)I ...doesn't meet.....Paul today, but I........met.... him last Sunday.

(phần 1 bạn không cho từ trong ngoặc nhé)

2) Ellen .........always writes......with her left hand.(always/ to write)

Học tốt nhé

Bài làm

1) Doesn't meet    -   met

2) Always writes

P/s tham khảo nha

điên à  

Yes.

I am crazy now

...............W.......

bạn lên google dịch í

Bạn không thể tách trà ??

<< I don't know >>

1.must

2.have to

3.ought to

put " must,have to or ought to"to complete the sentence

1. remember that the letter....must.......be sent to her this morning

2. police:you..ought to.......bring your own driving licence when you drive a car

3.we didn't ......have to.......spend too much time taking the taxi

1.He ought not to go to bed late.

2.They ought to learn a few french words

3.They ought not to drive that

4.He ought to get up earlier

give advice with ought to or ought not to.

1.minh looks very tired.(go to bed late)

=>minh ought not to go to bed late

2.my parents are going to visit france.(learn a few french words)

=>my parents ought to learn a few french words

3.there is a traffic jam and the people are rushing forward(drive that)

=>they ought not to drive li ke that

4.it's eight o'clock. helen is still sleeping.(get up earlier)

=>she ought to get up earlier

1.himself

2.yourself

3.himself

4.themselves

5.himself

6.himself

7.myself

8.ourselves

9.yourself

k cho mk nha