Duoc roi dieu kien gi

Chứng minh các đẳng thức sau xác định với mọi giá trị của t

C = \(\frac{\left|2-3t\right|}{2t^2+4t+5}\) + \(\frac{t-1}{2}\)

D = \(\frac{t+1}{3t^2-t+1}\) - \(\frac{2t^2-3}{3}\)

ko hiểu gì hết kết bạn ko

bang 64

ngu vãi câu này mà còn hỏi ngu còn gì bằng về nhà đi xúc phân trồng rau mà ăn đi con à

33390 là quá chuẩn

1,999;3,456;5,756;12,323;12,364

Chuyển các câu sau thành câu bị động.

1)People speak french and English in Canada.

=> French and English are spoken in Canada

2)They teach french in this school.

=> French is taught in this school

1. Nam and his classmates ( play ).....played... soccer yesterday afternoon

2. He ( send ).....sent..... a letter to his pen pal last week

3. Mrs. Hong ( teach ).....taught..... us English last year

4. Barbara ( wear ).......wore.... a very beautiful dress last night

5. Lan ( write ).....wrote..... to her grandparents more often last year

6. His father often ( work ).....works...... in the garden on Sunday mornings

7. The teach usually ( give )......gives... the students a lot of homework on the weekend

8. Tourists often ( go )......go.... to eat seafood at that famous restaurant

9.My father (buy).....bought.....a new car two months ago.
10.He (teach).....taught.....Math at this school in 1986.

\(0,006dam^2=60dm^2\)