thức hiện phép tính x+1/3(x-2): x/3(x^2-4x+4)

phân thức nghịch đảo của phân thức x-1/x+2

Câu 2: Lập CTHH của các hợp chất sau: 

a/ Hợp chất A có PTK là 164 và có : 42,07%Na  ; 18,9%P  ; 39,03%O 

b/ Hợp chất B có :  24,7% K ; 34,8% Mn ; 40,5% O 

Câu 1: Có bao nhiêu gam sắt có trong: 
a/ 31,75 gam FeCl2                   b/ 24 gam Fe2(SO4)3                 c/  9,28 gam Fe3O4 

4x²y.(3x²y-2xy³+5)

rút gọn biểu thức 40x-7/5x-3 - 17/5x-3

40x-7/5x-3 - 17/5x-3

X. TRANSFORMATION:

6. Nga drinks more milk than Lan

" Lan drinks …………………………………………………………………………….

7. Ba eats less beef than Tan.

" Tan eats …………………………………………………………………………….

8. Loan spends more money than Thu.

" Thu spends …………………………………………………………………………….

9. Mr Tuan has less freetime than Mr John

" Mr John………………………………………………………………………………

10. This river suffers less pollution than that river. 

" Mr John………………………………………………………………………………

X. TRANSFORMATION:

1. I think making model is interesting.

" I find …………………………………………………………………………………

2. They think making pottery is boring.

" They find ……………………………………………………………………………

3. I find drawing pictures creative.

" I think ……………………………………………………………………………….

4. We think painting is interesting

"We find...............................................................................................................

5. He thinks taking photos is expensive

" He finds.............................................................................................................

6. Nga drinks more milk than Lan

" Lan drinks …………………………………………………………………………….

7. Ba eats less beef than Tan.

" Tan eats …………………………………………………………………………….

8. Loan spends more money than Thu.

" Thu spends …………………………………………………………………………….

9. Mr Tuan has less freetime than Mr John

" Mr John………………………………………………………………………………

10. This river suffers less pollution than that river. 

" Mr John………………………………………………………………………………

VIII. QUESTION WORDS “HOW MUCH ….? / HOW MANY…...?”.

1. …………………text messages do you send a day?

2. ..........................  money have you got in your pocket?

3. ........................... sleep do you get a night?

4. .......................... water do you drink a day?

5. .........................  cousins have you got?

6. ..........................  packets of biscuits do you eat a week?

7. ..........................  people are there in this classroom?

8. ..........................  homework do you do a day?

9. ………………. butter is there in the fridge?

10. ……………… bananas are there on the table?