ko thấy đề

?

1. a

2. b

3. b

4. b

5. b

6. d

7. c

8. b

9. b

10. a

11. c

12. d

13. b

14. b

15. c

bạn viết ra đi

1 think

2 that

3 said

4 that

5 that

6 tell

7 that

8 that

9 that

10 that

11 think

12 assurance

13 that

14 That

15 That

1: A=-1/2*xy^3*4x^2y^2=-2x^3y^5

Bậc là 8

Phần biến là x^3;y^5

Hệ số là -2

2:

a: P(x)=3x+4x^4-2x^3+4x^2-x^4-6

=3x^4-2x^3+4x^2+3x-6

Q(x)=2x^4+4x^2-2x^3+x^4+3

=3x^4-2x^3+4x^2+3

b: A(x)=P(x)-Q(x)

=3x^4-2x^3+4x^2+3x-6-3x^4+2x^3-4x^2-3

=3x-9

A(x)=0

=>3x-9=0

=>x=3

12,12 x 7,5 + 12,12 : 2 + 12,12 + 12,12

= 12,12 x 7,5 + 12,12 x 0,5 + 12,12 x 1 + 12,12 x 1

= 12,12 x (7,5 + 0,5 + 1 + 1)

= 12,12 x 10

= 121,2

121,2 nha bạn

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giúp mình với

 You must wear sun scream when you're on Ly Son island

- You must go to Ly Son Island in the early morning or late afternoon

- You mustn't litter on the island

-  You mustn't swim alone. You must wear sun scream when you're on my son's island

- You must go to the Sam Son beach in the early morning or late afternoon

- You mustn't litter on the island

-  You mustn't swim alone.

chucbanhoctot

#tranhuyentuanh

1 his illness, he cannot come

2 her busyness, she couldn't help us

3 his illness, he tries to go to school on time

4 the bad weather, we tried to finish the work on the road

5 the bad weather, we got to the station late

6 the old house, she liked it

7 not wearing any shoes, Carol ran outside to see what was happening

8 being afraid of flying, Fiona had to get on the plane