Làm tính chia:

a/(5x\(^2\)-4x\(^2\)+7x):2x

b/(x\(^5\)+12x\(^3\)-9x\(^2\)):(-4x)

c/(x\(^2\)y+\(\dfrac{1}{3}\)x\(^2\)y\(^2\)+\(\dfrac{7}{2}\)x\(^3\)y):5xy

d/(3x\(^5\)y\(^2\)+\(\dfrac{1}{3}\)x\(^2\)y\(^2\)+4x\(^2\)y\(^3\)-9x\(^3\)y\(^3\)):(-\(\dfrac{1}{3}\)x\(^2\)y\(^2\))

e/(21x\(^5\)y\(^4\)-12x\(^4\)y\(^5\)+28x\(^3\)y\(^4\)-7x\(^4\)y\(^3\)):(-7x\(^3\)y\(^3\))

f/(14x\(^3\)-21a\(^3\)+3a\(^2\)):\(\dfrac{1}{2}\)a\(^2\)

g/(7a\(^3\)x\(^2\)-4a\(^2\)x-8a\(^2\)x\(^3\)):(-3a\(^2\)x)

h/[(a-b)\(^5\)-2(a-b)\(^4\)+3(a-b)\(^3\)]:[-5(b-a)\(^3\)]

i/(1-27x\(^3\)):(3x-1)

k/(8x\(^3\)+27y\(^3\)):(4x\(^2\)-6xy+9y\(^2\))

Thực hiện phép tính:

a) (2.5\(^5\)-4.5\(^3\)\(^{ }\)+625):5\(^3\)

b) (81\(^2\)-27\(^2\)+18\(^3\)):3\(^5\)

c) (98\(^2\)-343):7\(^3\)

d) 4\(^4\).7\(^4\)-(28\(^2\)+1)(28\(^2\)-1)

e) 8(3\(^2\)-1)(3\(^4\)+1)(3\(^8\)+1)(3\(^{16}\)+1)+1

Choose the best one:

1/Nguyen didn't think country life could be (so,or,and,because) interesting.

2/Nguyen sometimes joins the boys (in,on.at,from) herding the buffaloes.

3/Nick would like to visit the countryside (in,on,at,behind) harvest time.

4/Nguyen's kite isn't big (and,but,though,because) colorful.

5/Rice isn't transported home(in,on,at,with) trucks.

6/Life in a small town is (peaceful,much peaceful,less peaceful,more much peaceful) than that in a big city

Write sentence:

1/over,life, change,past,in,cuntryside,the,the,has,10,year,a lot .(rearrange the words)

2/"Frech" is more common than Spinsh in Canada.(WH question)

3/This room is less wide than the next one.

4/The exhibitions in the museum shows the dirverse of different cultural groups.(correct 1 mistake )

Rewite the way to make food:

1/this delious dish, readly, easy, make

=>

2/first,you,soak,rice,water,least, 5 hours

=>

3/then,rice,and,drain,well

=>

4/next, turneric, mix , well

=>

5/wait, 10minutes, after that, coconut, salt

=>

6/finally, steam, rice, 30minutes,check,that,it,full,cooked

=>

7/you,can,dish,chicken

=>

8/have, good, dish

=>

Cho a+b=7, ab=12. Tính a\(^4\)+b\(^4\)