a) ta có: 7^10 < 7^14 = (7^2)^7 = 49^7 < 50^7

=> 7^10 < 50^7

b) ta có: 5^30 = (5^3)^10 = 125^10 > 124^10

=> 5^30 > 124^10

c) ta có: 9^21 = (9^3)^7=729^7

phần d thì mk ko bk, xl bn nha

a,<

b,>

c,=

^_^

\(\dfrac{7^{45}}{7}=7^{44}\)

\(49.7^{20}=7^2.7^{20}=7^{22}\)

\(\Rightarrow\dfrac{7^{45}}{7}=7^{44}>7^{22}=49.7^{20}\)

7⁴⁵ : 7 ²³ =  7²² 

49 \(\times\) 7²⁰ = 7² \(\times\) 7²⁰ = 7²²

7⁴⁵ : 7²³ = 49 \(\times\) 7²⁰

Ta có:

\(\left(-5\right)^{30}=\left(-5^3\right)^{10}=\left(-125\right)^{10}=125^{10}\)

\(\left(-3\right)^{50}=\left(-3^5\right)^{10}=\left(-81\right)^{10}=81^{10}\)

Vì \(125^{10}>81^{10}\)

⇒\(\left(-5\right)^{30}>\left(-3\right)^{50}\)

\(\left(-5\right)^{30}\) và \(\left(-3\right)^{50}\)

Ta có: \(\left(-5\right)^{30}=\left[\left(-5\right)^3\right]^{10}=\left(-125\right)^{10}\)

\(\left(-3\right)^{50}=\left[\left(-3\right)^5\right]^{10}=\left(-243\right)^{10}\)

Vì \(\left(-125\right)^{10}< \left(-243\right)^{10}\) nên \(\left(-5\right)^{30}< \left(-3\right)^{50}\)

Ta có : 5 > 3; 300 > 45

=> \(3^{45}< 5^{300}\)

Học tốt~

do 5>3,300>45 nen 5 mu 300 >3 mu 45

Ta có : 5 > 3 : 300 > 45

\(\Rightarrow3^{45}< 5^{300}\)

Code : Breacker

5³⁰=(5³)¹⁰=125¹⁰

ta thấy 125¹⁰>24¹⁰

=>5³⁰>24¹⁰

5³⁰=(5³)¹⁰=125¹⁰

ta thấy 125¹⁰>24¹⁰

=>5³⁰>24¹⁰

a) Ta có: \(3^{40}=\left(3^4\right)^{10}=81^{10}\)

              \(5^{30}=\left(5^3\right)^{10}=125^{10}\)

Vì 125 > 81 => \(125^{10}>81^{10}\) => \(3^{40}>5^{30}\)

b) Ta có: \(5^{303}>5^4\) vì 303 > 4

         Mà: \(5^4>2^4\)  vì 5 > 2

=> \(5^{303}>2^4\)

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: \(8242408>91809\)

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

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

Trả lời:

a, Ta có: 3²⁰ ; 27⁴ = ( 3³ )⁴ = 3¹²

Vì 3²⁰ > 3¹² nên 3²⁰ > 27⁴

b, 2²⁵ ; 16⁶ = ( 2⁴ )⁶ = 2²⁴

Vì 2²⁵ > 2²⁴ nên 2²⁵ > 16⁶ 

Trả lời:

c, 10³⁰ = ( 10³ )¹⁰  = 1000¹⁰ ; 4⁵⁰ = ( 4⁵ )¹⁰ = 1024¹⁰

Vì 1000¹⁰ < 1024¹⁰ nên 10³⁰ < 4⁵⁰

d, 5³⁴ ; 25.5³⁰ = 5² . 5³⁰ = 5³²

Vì 5³⁴ > 5³² nên 5³⁴ > 25.5³⁰

Trả lời:

e, 10³⁰ = ( 10³ )¹⁰ = 1000¹⁰ ; 2¹⁰⁰  = ( 2¹⁰ )¹⁰ = 1024¹⁰

Vì 1000¹⁰ < 1024¹⁰ nên 10³⁰ < 2¹⁰⁰

f, 5⁴⁰ = ( 5⁴ )¹⁰ = 625¹⁰ ; 620¹⁰ 

Vì 625¹⁰ > 620¹⁰ nên 5⁴⁰ > 620¹⁰ 

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