Thực hiện phép chia:

a)(4x⁷+16x⁵-8x⁴+21x³+84x-42):(\(\dfrac{4}{3}\)x⁴+7)

b)(5x⁶+4x⁵+8x⁴+6x³-10x³-\(\dfrac{47}{4}\)x²-\(\dfrac{5}{4}\)):(2x⁴+3x²-5)

Giúp mik nha^-^

Supply the correct form of verbs in brackets: 

1.He asked me (not wait) ............ for him.

2. Don't forget (look) ............ the door before (go) ......... to bed

Make Tag questions for the following sentences:

1.It never works very well,_______?

2.Nobody complained about the noise,_______?

3.Mary hardly ever cooks,_______?

4.He never takes advice,_______?

5.There used to be trees here,_______?

6.We'd never have known,_______?

7.He's still sleeping at the moment,_______?

8.Someone called me last night,_______?

9.He's never liked her,_______?

10.Everyone warned you before,_______?

11.We lost the game,_______?

12.Jane likes vegetable,_______?

13.Hillary loves to bake,_______?

14.Everybody is here now,_______?

Make Tag questions for the following sentences:

1.Get out of my sight,________?

2.Let's have a drink,________?

3.Shout up,________?

4.No one can help you,________?

5.Don't do it,________?

6.We often watch TV in the afternoon,________?

7.Cars pollute the inviroment,________?

8.It has been a national memorial since 1925,________?

9.I will help you,________?

10.You shouldn't do that,________?

Tìm x biết: (x+3)(x-4)+(x-1)(x+1)=10

Tìm x biết: (x+3)(x-4)+(x-1)(x+1)=10