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: \(8242408>91809\)

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

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

Câu 1.99²⁰và 9999¹⁰

⁼(99²)¹⁰=9801¹⁰

Vậy 9801¹⁰<9999¹⁰ suy ra  99²⁰<9999¹⁰

Câu 2. 3⁵⁰⁰và 7³⁰⁰

 3⁵⁰⁰=(3⁵)¹⁰⁰=243¹⁰⁰

7³⁰⁰=(7³)¹⁰⁰=343¹⁰⁰

Vậy 243¹⁰⁰<343¹⁰⁰ => 3⁵⁰⁰<7³⁰⁰

\(a,\)Ta có :

\(9^5=\left(3^2\right)^5=3^{10}\)

\(27^3=\left(3^3\right)^3=3^{27}\)

Vì \(3^{10}>3^9\Rightarrow9^5>27^3\)

Ta có : 3⁵⁰⁰  = (3⁵)¹⁰⁰ = 243¹⁰⁰

                  7³⁰⁰ = (7³)¹⁰⁰ = 343¹⁰⁰

Vì 243 < 343

Nên : 243¹⁰⁰ < 343¹⁰⁰ 

Hay : 3⁵⁰⁰  < 7³⁰⁰ 

a, A = 3⁵⁰⁰ = (3⁵)¹⁰⁰ = 243¹⁰⁰
B = 7³⁰⁰ = (7³)¹⁰⁰ = 343¹⁰⁰
Mà 243¹⁰⁰ < 343¹⁰⁰
=> A < B
@nguyễn thi trà giang

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

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

Vì \(243^{100}< 343^{100}\Rightarrow3^{500}< 7^{300}\)

\(\Rightarrow A< B\)

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

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

Vì \(91809^{101}< 8242408^{101}\Rightarrow303^{202}< 202^{303}\)

\(\Rightarrow A< B\)

c) \(A=3^{21}=3\cdot3^{20}=3\cdot\left(3^2\right)^{10}=3\cdot9^{10}\)

\(B=2^{31}=2\cdot2^{30}=2\cdot\left(2^3\right)^{10}=2\cdot8^{10}\)

Ta có: \(3>2;9^{10}>8^{10}\Rightarrow3\cdot9^{10}>2\cdot8^{10}\Rightarrow3^{21}>2^{31}\)

\(\Rightarrow A< B\)

b)

202³⁰³=(2³*101³)¹⁰¹

303²⁰²=(3²*101²)¹⁰¹

101³>101²

nên ta so sánh 2^3 và 3^2

2³=8

3^2=9

vậy

câu b dien dau <

a) Ta có:

3.4⁷>2.4⁷=2.2¹⁴=2¹⁵

mà 8⁵=2¹⁵

=>3.4⁷>8⁵

b) ta có:

202³⁰³ =(202³)¹⁰¹=8242408¹⁰¹

 303²⁰²=(303²)¹⁰¹=91809¹⁰¹

Vì 8242408 > 91809 nên 202³⁰³> 303²⁰²

a)\(27^2\)và \(4^6\)

\(27^2=\left(3^3\right)^2\)

\(4^6=\left(2^3\right)^2\)

\(3^3>2^3\)

b) \(3^{500}=\left(3^5\right)^{100}\)

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

\(7^3=343\)

\(3^5=243\)

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

c) \(8^5=4^5\cdot2^5\)

\(3\cdot4^7=3\cdot4^2\cdot4^5\)

\(3\cdot4^2>2^5\)

\(3\cdot4\cdot4=2\cdot2\cdot2\cdot2\cdot3>2\cdot2\cdot2\cdot2\cdot2\)

\(8^5< 3\cdot4^7\)

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

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

\(202^3>303^2\)

Nên

cam on ban

mình nhầm C phải lớn hơn

bn ko biết viết lũy thừa sao

a) 3⁵⁰⁰>7³⁰⁰

b) 202³⁰³>303²⁰²

c) 3²¹>2²¹

ko chắc câu c) hì

a) \(^{8^5}\)= (   \(2^3\)) ^ 5 = \(^{2^{15}}\)= 2^14 . 2

3.4^7= 3 . 2^14

Vì 3 > 2 nên 8^5 < 3.4^7

b) 202^303 = ( 2. 100 ) ^ 3.101 = ( 2^3 . 101^3 ) ^ 100 = ( 8 . 101^3 ) ^ 101

303^202 = ( 3 . 101 ) ^ 2 . 101= ( 3^2 . 101^2 ) ^ 100 = ( 9 . 101^2 )

Vì Vì 8.101^3 = 8. 101 . 101^2 > 9 . 101^2

Nên 202^3 > 3036202

c) 3^500 = ( 365 ) ^ 100 = 243^100

7^300 = ( 7^3 ) ^ 100 = 343^100

Vì 243 < 343

Nên 3^500 < 7^300

Đúng 100 % nếu  sai thì ko chịu trách nhiệm đâu
 

minh viết sao là mủ *

8*5 < 3x4*7

202*303>303*202

3*500=7*300