333⁴⁴⁴ và 444³³³
Ta có: 333⁴⁴⁴ = 111⁴⁴⁴ x 3⁴⁴⁴ 
          444³³³ = 111³³³ x 4³³³ 
Tách: 3⁴⁴⁴ = (3⁴)¹¹¹ =81¹¹¹ <=>4³³³ = (4³)¹¹¹ = 64¹¹¹ 
Mà: {111⁴⁴⁴ > 111³³³ (1) 
       {81¹¹¹ > 64¹¹¹ hay: (3⁴)¹¹¹ > (4³)¹¹¹ (2) 
Từ (1) và (2) ta có:333⁴⁴⁴ > 444³³³

333⁴⁴⁴ = (333⁴)¹¹¹ = ( 3⁴.111⁴)¹¹¹ = (81.111⁴)¹¹¹

444³³³ = (444³)¹¹¹ = (4³.111³)¹¹¹ = (64.111³)¹¹¹

=> 333⁴⁴⁴> 444³³³

 333⁴⁴⁴ và 444³³³
Ta có: 333⁴⁴⁴ = 111⁴⁴⁴ x 3⁴⁴⁴ 
          444³³³ = 111³³³ x 4³³³ 
Tách: 3⁴⁴⁴ = (3⁴)¹¹¹ =81¹¹¹ <=>4³³³ = (4³)¹¹¹ = 64¹¹¹ 
Mà: {111⁴⁴⁴ > 111³³³ (1) 
       {81¹¹¹ > 64¹¹¹ hay: (3⁴)¹¹¹ > (4³)¹¹¹ (2) 
Từ (1) và (2) ta có:333⁴⁴⁴ > 444³³

a, 3⁶=3.3.3.3.3.3=729

6³=6.6.6=216

729>216 nên 3⁶>6³

b, 2²⁰⁰=2^2.100=(2²)¹⁰⁰=4¹⁰⁰

4¹⁰⁰=4¹⁰⁰ nên 4¹⁰⁰=2²⁰⁰

c, 333⁴⁴⁴=333^4.111=(333⁴)¹¹¹

444³³³=444^3.111=(444³)¹¹¹

Cả hai số đều cùng có số mũ 111 nên ta so sánh 333⁴ và 444³

333⁴=(3.111)⁴=3⁴.111⁴=81.111⁴

444³=(4.111)³=4³.111³=64.111³

81.111⁴>64.111³ nên 333⁴⁴⁴>444³³³

a, 3⁶ = (3²)³ = 9³ > 6³ vậy 3⁶ > 6³

Các câu khác làm như Lộc 

\(a,3^6=\left(3^2\right)^3=9^3\\ \)

Vì \(9^3>6^3=>3^6>6^3\)

\(b,4^{100}=\left(2^2\right)^{100}=2^{200}\)

Vì \(2^{200}=2^{200}=>4^{100}=2^{200}\)

\(c,333^{444}=111^{444}\cdot3^{444}\\ 444^{333}=111^{333}\cdot4^{333}\\ 3^{444}=\left(3^4\right)^{111}=81^{111}\\4^{333}=\left(4^3\right)^{111}=63^{111} \)

Vì  \(111^{444}>111^{333};81^{111}>63^{111}=>333^{444}>444^{333}\)

\(a.10^{30}=\left(10^3\right)^{10}=1000^{10}\\ 2^{100}=\left(2^{10}\right)^{10}=1024^{10}\)

Vì 1000¹⁰ < 1024¹⁰ => 10³⁰ < 2¹⁰⁰

\(b,333^{444}=\left(111\cdot3\right)^{444}=111^{444}\cdot3^{444}=111^{444}\cdot81^{111}\\ 444^{333}=\left(111\cdot4\right)^{333}=111^{333}\cdot4^{333}=111^{333}\cdot64^{111}\)

Vì 111⁴⁴⁴ >111³³³ ; 81¹¹¹ > 64¹¹¹ => 333⁴⁴⁴ > 444³³³

mình cảm ơn

a, Ta có  10 30 = 10 3 10 = 1000 10

2 100 = 2 10 10 = 1024 10

Vì 1000<1024 nên  1000 10 <  1024 10

Vậy  10 30 <  2 100

b, Ta có:  333 444 = 333 4 111 = 3 . 111 4 111 =  81 . 111 4 111

444 333 = 444 3 111 = 4 . 111 3 111 =  64 . 111 3 111

Vì 81 > 64 và  111 4 > 111 3 nên  81 . 111 4 111 > 64 . 111 3 111

Vậy  333 444 > 444 333

c, Ta có:  21 5 = 3 . 7 15 = 3 15 . 7 15

27 5 . 49 8 = 3 3 5 . 7 2 8 = 3 15 . 7 16

Vì  7 15 < 7 16 nên  3 15 . 7 15 < 3 15 . 7 16

Vậy  21 5 <  27 5 . 49 8

d, Ta có:  3 2 n = 3 2 n = 9 n

2 3 n = 2 3 n = 8 n

Vì 8 < 9 nên  8 n < 9 n n ∈ N *

Vậy  3 2 n >  2 3 n

e, Ta có: 2017.2018 = (2018–1).(2018+1) = 2018.2018+2018.1–1.2018–1.1

=  2018 2 - 1

Vì  2018 2 - 1 < 2018 2 nên 2017.2018< 2018 2

f, Ta có:  100 - 99 2000 = 1 2000 = 1

100 + 99 0 = 199 0 = 1

Vậy  100 - 99 2000 =  100 + 99 0

g, Ta có:  2009 10 + 2009 9 = 2009 9 . 2009 + 1

=  2010 . 2009 9

2010 10 = 2010 . 2010 9

Vì  2009 9 < 2010 9 nên  2010 . 2009 9 <  2010 . 2010 9

Vậy  2009 10 + 2009 9 <  2010 10

2017^10+2017^9=2017^9+(1+2017)=2017^9x2018

2018^10=2018^9+2018

ta có:2018=2018

2017^9<2018^9

=>2017^10+2017^9<2018^10

Ta có: 4²⁰⁰ = (4²)¹⁰⁰ = 16¹⁰⁰

2⁴⁰⁰ = (2⁴)¹⁰⁰ = 16¹⁰⁰

Vì 16¹⁰⁰ = 16¹⁰⁰ nên 4²⁰⁰ = 2⁴⁰⁰

4^200=2^400

\(4^{200}\)

\(=\left(2^2\right)^{200}\)

\(=2^{2.200}=2^{400}\)

Vậy  \(4^{200}=2^{400}\)

hk tốt

The better a child is brought up, the better he behaves 

The faster you drive, the more likely you are to have an accident

The less you work, the lower marks you’ll have in your exam

The harder you study, the easier you’ll find exams

The longer I waited for him, the more worried I got

The more sport I practised, the fitter I got

The more I explained it to him, the less he understood

The more clothes I put on, the colder I am

The longer I know him, the less I like him

The cleverer the students are, the easier it is to teach them

The sooner you come, the better

The more attention you pay to him, the worse

The more pleasant atmosphere you work in, the less stressed you’ll be

The more careful you are when driving, the fewer accidents you’ll have

The more money he earns, the more his wife complains

The more exercises you do, the better you’ll learn the subject

The longer I listened to his story, the more surprise I was

The farther from your school you live, the earlier you'll have to get

\(A=\dfrac{7^5}{7+7^2+7^3+7^4}=\dfrac{7^5}{\left(7+7^4\right)+\left(7^2+7^3\right)}=\dfrac{7^5}{7^5+7^5}=7^5\)

\(B=\dfrac{5^5}{5+5^2+5^3+5^4}=\dfrac{5^5}{\left(5+5^4\right)+\left(5^2+5^3\right)}=\dfrac{5^5}{5^5+5^5}=5^5\)

Vì 7 > 5 nên \(7^5>5^5\)

Vậy A > B

(Nhớ cho mik một tick nha cảm ơn bạn nhìu :3)