a,3²⁰ và 27⁴

3²⁰=(3⁵)⁴=243⁴>27⁴

Vậy 3²⁰>27⁴

b,5³⁴ và 25x5³⁰

25x5³⁰=5²x5³⁰=5³²<5³⁴

=>5³⁴>25x5³⁰.

c,2²⁴và 26⁶

2²⁴=(2⁴)⁶=16⁶<26⁶

=>2²⁴<26⁶

d,10³⁰và 4⁵⁰

10³⁰=(10³)¹⁰=1000¹⁰

4⁵⁰=(4⁵)¹⁰=1024¹⁰

Vì 1000¹⁰<1024¹⁰nên 10³⁰<4⁵⁰.

e,2³⁰⁰và 3²⁰⁰

2³⁰⁰=(2³)¹⁰⁰=8¹⁰⁰

3²⁰⁰=(3²)¹⁰⁰=9¹⁰⁰

Vì 8¹⁰⁰<9¹⁰⁰ nên 2³⁰⁰<3²⁰⁰

a) Ta có:

\(2^{300}=2^{3\cdot100}=\left(2^3\right)^{100}=8^{100}\)

\(3^{200}=3^{2\cdot100}=\left(3^2\right)^{100}=9^{100}\)

Mà: \(8< 9\)

\(\Rightarrow8^{100}< 9^{100}\)

\(\Rightarrow2^{300}< 3^{200}\)

b) Ta có:

\(3^{500}=3^{5\cdot100}=\left(3^5\right)^{100}=243^{100}\)

\(7^{300}=7^{3\cdot100}=\left(7^3\right)^{100}=343^{100}\)

Mà: \(243< 343\)

\(\Rightarrow243^{100}< 343^{100}\)

\(\Rightarrow3^{500}< 7^{300}\)

c) Ta có: 

\(8^5=\left(2^3\right)^5=2^{3\cdot5}=2^{15}=2\cdot2^{15}\)

\(3\cdot4^7=3\cdot\left(2^2\right)^7=3\cdot2^{2\cdot7}=3\cdot2^{14}\)

Mà: \(2< 3\)

\(\Rightarrow2\cdot2^{14}< 3\cdot2^{14}\)

\(\Rightarrow8^5< 3\cdot4^7\)

d) Ta có:

\(202^{303}=202^{3\cdot101}=\left(202^3\right)^{101}=8242408^{101}\)

\(303^{202}=303^{2\cdot101}=\left(303^2\right)^{101}=91809^{101}\)

Mà: \(8242408>91809\)

\(\Rightarrow8242408^{101}>91809^{101}\)

\(\Rightarrow202^{303}>303^{202}\)

\(9^{200}=\left(3^2\right)^{200}=3^{400}\Rightarrow3^{400}=9^{200}\)

\(2^{91}=\left(2^{13}\right)^7=4096^7;5^{35}=\left(5^5\right)^7=3125^7\)

\(\Rightarrow2^{91}>5^{35}\)

\(2^{300}=\left(2^3\right)^{100}=8^{100};3^{200}=\left(3^2\right)^{100}=9^{100}\Rightarrow3^{200}>2^{300}\)

a) Ta có: 4²⁰⁰ và 16¹⁵⁰

Đổi: 16¹⁵⁰ = (4²)¹⁵⁰ = 4^2.150 = 4³⁰⁰

Vì 4²⁰⁰ < 4³⁰⁰ nên 4²⁰⁰ < 16¹⁵⁰ 

b) Ta có: 4²⁰⁰ và 3³⁰⁰

Đổi: 4²⁰⁰ = 4^2.100 = (4²)¹⁰⁰ = 16¹⁰⁰ ;        3³⁰⁰ = 3^3.100 = (3³)¹⁰⁰ = 27¹⁰⁰

Vì 16¹⁰⁰ < 27¹⁰⁰ nên 4²⁰⁰ < 3³⁰⁰

c) Ta có: 9⁴⁰⁰ và 81²⁰⁰

Đổi: 9⁴⁰⁰ = 9^2.200 = (9²)²⁰⁰ = 81²⁰⁰

Vì 81²⁰⁰ = 81²⁰⁰ nên 9⁴⁰⁰ = 81²⁰⁰

\(10^{30}vs\)\(2^{100}\)

\(10^{30}=\left(10^3\right)^{10}=1000^{10}\)

\(2^{100}=\left(2^{10}\right)^{10}=1024^{10}\)

Vì \(1000^{10}< 1024^{10}=>10^{30}< 2^{100}\)

\(3^{54}vs2^{81}\)

\(3^{54}=\left(3^6\right)^9=729^9\)

\(2^{81}=\left(2^9\right)^9=512^9\)

Vì \(729^9>512^9=>3^{54}>2^{81}\)

\(3^{200}=\left(3^2\right)^{100}=9^{100}\)

\(2^{300}=\left(2^3\right)^{100}=8^{100}\)

Vì \(8^{100}< 9^{100}=>2^{300}< 3^{200}\)

a ) 2²⁰⁰<8³⁰⁰

b ) 25²⁰⁰>5³⁰⁰

c ) 4²¹<64⁷

a)\(8^{300}=\left(2^3\right)^{300}=2^{900}\)

Vì \(200< 900\Rightarrow2^{200}< 8^{300}\)

b)\(25^{200}=\left(5^2\right)^{200}=5^{400}\)

Vì \(400>300\Rightarrow25^{200}>5^{300}\)

c)\(64^7=\left(4^3\right)^7=4^{21}\)

Vì \(4^{21}=4^{21}\Rightarrow4^{21}=64^7\)

a) \(2^{200}=2^{200}\)

\(8^{300}=\left(2^3\right)^{300}=2^{900}\)

vi \(2^{200}< 2^{900}\)nen \(2^{200}< 8^{300}\)

b) \(25^{200}=\left(5^2\right)^{200}=5^{400}\)

\(5^{300}=5^{300}\)

vi \(5^{400}>5^{300}\)nen \(25^{200}>5^{300}\)

c) \(4^{21}=\left(2^2\right)^{21}=2^{42}\)

\(64^7=\left(2^6\right)^7=2^{42}\)

vi \(2^{42}=2^{42}\)nen \(4^{21}=64^7\)

so sánh à?

a)\(2^{300}=8^{100}\)

\(3^{200}=9^{100}\)

\(2^{300}< 3^{200}\)

b)\(125^5=\left(25.5\right)^5=\left(5.5.5\right)^5=5^{15}\)

\(25^7=\left(5.5\right)^7=5^{14}\)

\(125^5>25^7\)

c)\(9^{20}=\left(3.3\right)^{20}=3^{40}\)

\(27^{13}=\left(3.3.3\right)^{13}=3^{39}\)

\(9^{20}>27^{13}\)

(^) là mũ

a)2^300 và 3^200

2^300=(2^3)^100=8^100

3^200=(3^2)^100=9^100

9^100>8^100

=>3^200>2^300

B)125^5 và 25^7

125^5=(5^3)^5=5^15

25^7=(5^2)^7=5^14

5^15>5^14

=>125^5>25^7

C)9^20 VÀ 27^13

9^20=(3^2)^20=3^40

27^13= (3^3)^13=3^39

3^39>3^40

=>27^13>9^20

CHÚC BẠN HỌC TỐT:D

:D