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Tính bằng cách phân tích ra : 

\(^{3^{99}=\left(3^{33}\right)^3}\)

\(11^{21}=\left(11^7\right)^3\)

Ta có :

\(3^{99}=\left(3^{33}\right)^3\)

\(11^{21}=\left(11^7\right)^3\)

Vì cùng có số mũ là 3 

Mà : \(3^{33}>11^7\Rightarrow3^{99}>11^{21}\)

Vậy :\(3^{99}>11^{21}\)

giúp mình với

Câu hỏi đâu bạn nhỉ?

Bài đâu

Part 3

I

1 T

2 F

II

3 My family can receive much happiness from doing volunteer

4 My family raises some fund for them, and also cook meal for them

Part IV

I

1 Although I was tired last night, I stayed up late to watch a game show

2 Ha noi is smaller than HCM City

II

1 Sleep more, but try to wake up at the usual time

2 Be careful with what you eat and drink

III

1 - B

2 - D

3 - A

4 - E

5 - F

B

6 so

7 or

8 because

9 and

10 more

hông bít đâu nữa, ở đâu vậy?

179 - 58 + 15 + 58 - 75

= 121 + 15 + 58 - 75

= 136 + 58 - 75

= 194 - 75

= 119

( -5 ) * 9 * 2 * 15

= ( -45 ) * 2 *15

= ( -90 ) * 15

= -1350

159 * ( -13 ) - ( -13 ) * 59

= ( -13 ) * ( 159 - 59 )

= ( -13 ) * 100

= -1300

( -109 ) - ( -2 )^3 * ( 6 - 7 )

= ( -109 ) - ( -8 ) * ( -1 )

= ( -109 ) - 8

= -117  

119

-1350

-1300

-871/8

Hok tốt bn nhé!!

a,179-58+15+58-75

=121+15+58-75

=136+58-75

=194-75

=119

b, (-5).9.2.15

=(-450)x2x15

=-90x15

=-1350

c, 159.(-13)-(-13).59

=(-13).(159-59)

=-(13).100

=-1300

d,(-109)-(-2)mu 3.(6-7)

=(-109).(-8).(-1)

=(-109)-8

=-117