173/Một oxit nitơ có tỉ số khối lượng giữa 2 nguyên tố nito và oxi bằng 7:4. Xác định công thức hóa học

Phân tích đa thức sau thành nhân tử: a) $12$$x^{2}$$y$ + $12$$x$$y^{2}$ + $3$$y^{3}$ b) $x^{2}$ - $4$$x^{2}$ + $4$$x$ - $1$

Lm giúp e lm đúng nha e cảm ơn nhìu

Calli: Lu em !!! NL: Cj nói cái gì thì vô đây nhá ^^

III: Put the words in the correct order to make sentences: 31. She /a bath/every morning 32.I/ my homework/two hours ago. 33. How long / it take her / get / school/ everyday? 34. Could/me / nearest way/school? 35. They love/ understand /each other. IV: Rewrite these sentences by using the word in the blanket. 36. Tina knew how to play the piano at an early age. (could) 37.I'm short oftea. ( haven’t) 38. She teaches English. (teacher) 39. Tim studies at Ha noi Industrial Vocational College. ( student) 40. George came here on the bus ( by)

Giúp mình câu sent trans này với mng ơiii Martin cannot go any higher in his career. (pinnacle) =>Martin..his career.

VI.Rewrite these sentences, using the words in brackets. 1. The painting is bigger than the photograph.( not as……as) ………………………………………………………………. 2. This painting is more expensive than my painting.( not as……..as) ………………………………………………………………. 3. This picture is the same as the picture in our room. ( not different from) ……………………………………………………………….. 4. This film is more interesting than the one we saw last week. (not as………as) ……………………………………………………………….. 5. The journey was shorter than we thought at first.( not as……….as) ………………………………………………………………….. 6. I haven’t mer my family since last Christmas.( MET) ________________________________________________________________. 7. The children haven’t had a long vacation since last year.( LAST TIME) ____________________________________________________________________. 8. They haven’t visited their parents for 3 months.( VISITED) ____________________________________________________________________.

C/M a/b=c/d=p/q thì ma+nc+ep/mb+nd+eq=a/b=c/d=p/q

45678 mu 1 tính giá trị lũy thừa

Mn giúp mk vs mk ko biết cái này ai có thể giúp đc ko ạ