em tặng ah nè =))) (hình ảnh chỉ mang tính chất minh họa) 

câu d bạn làm tương tự như a),b),c) nha

a) \(3x^2y.[\dfrac{1}{6}x^2y^2z]\)

=(3.\(\dfrac{1}{6}\)) (\(x^2.x^2\)) . (\(y.\)\(y^2\)) \(z\)

=\(\dfrac{1}{2}\)\(x^4y^3z\)

b) -5\(x^3\)\(y^2\)+10\(x^3y^2\)+(\(\dfrac{-3}{4}\)\(x^3y^2\))-\(x^3y^2\)

= \([\)(-5)+10+\(\dfrac{-3}{4}\)+(-1)\(]\)\(x^3y^2\)

=\(\dfrac{13}{4}\text{​​}\text{​​}\)\(x^3y^2\)

c)\(\dfrac{1}{3}x^2y\)+\(xy^2\)-\(xy\)-\(\dfrac{1}{2}\)\(xy^2\)-3\(xy\)-\(\dfrac{1}{3}x^2y\)

=\([\)\(\dfrac{1}{3}x^2y\)+(-\(\dfrac{1}{3}x^2y\))\(]\)+(1\(xy^2\)-\(\dfrac{1}{2}\)\(xy^2\))+\([\)-1\(xy\)+(-3\(xy\))\(]\)

=0+\(\dfrac{1}{2}\)\(xy^2\)+-4\(xy\) (mik tính cái này nhanh)

=\(\dfrac{1}{2}\)\(xy^2\)+-4\(xy\)(mik không chắc kết quả này đúng)

d)\(\dfrac{1}{2}\)\(xy\).(\(\dfrac{2}{3}\)\(x^2\)-\(\dfrac{3}{4}\)\(xy\)+\(\dfrac{4}{5}\)\(y^2\))

C. đới nóng

Viết đoạn văn ngắn từ 10-15 dòng nêu cảm nghĩ của em về  đức tính giản dị của Bác Hồ và rút ra bài học cho bản thân

Arrange the words to make sentences meaningful 
     1. carnival / Rio / has / famous / the / most / in / the / world.

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      2. watching / I / interested / am / science-fiction / in / movies.

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      3. about / is / 2 kilometres / It / my / house / from / my / school / to.

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      4. Cannes Film Festival / the / When / was / first / held / ? 

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Make questions for the underlined parts.

1. The Songkran Festival is usually celebrated between 13 and 16 April.

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2. Vietnamese people go to pagodas at Tet to pray for a year of good luck and happiness.

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3. The Vietnamese celebrate Tet with family gatherings, traditional foods, and lion dances.

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4. The festival site is three miles from the nearest town of Shepton Mallet.

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5. During Tet, children and the elderly receive lucky money put in red envelopes.

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6. Many people went to Han River to witness the Danang International Fireworks Festival.

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7. Jean visits Dalat every two years to attend the Dalat Flower Festival.

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. Choose the word whose main stressed syllable is placed differently from that of the other in each group.

1. A. beauty             B. career                        C. firework                              D. harvest

2. A. award              B. drama                        C. actor                                   D. hero

3.A. appear               B. prepare                       C. allow                                   D. happen

4.A. police                   B. story                       C. cowboy                               D. western

5.A. relaxed                B. boring                     C. moving                               D. awful

6..A. traffic                 B. dancer                     C. cycling                                D. balloon

7.A. central                 B. gripping                  C. complete                             D. boring

8.A. obey                    B. enter                       C. answer                                D. listen

9.A. station                 B. healthy                    C. safety                                  D. alone

10.A. tidy                    B. compete                  C. extend                                D. mistake