a, 2^24 > 3^16

b, 5^300>3 ^500

c,99^20 > 9999^10

d, 2^30 +3^44 +4^30 < 3x24^10

a) \(2^{24}=2^{3.8}=8^8\)      \(3^{16}=3^{2.8}=9^8\)

Do \(8^8< 9^8\)=>   \(2^{24}< 3^{16}\)

b)  \(3^{200}=3^{2.100}=9^{100}\);      \(2^{300}=2^{3.100}=8^{100}\)

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

c)  \(7^{20}=7^{4.5}=2401^5>71^5\)

Vậy  \(7^{20}>71^5\)

d)  \(\left(-2\right)^{30}=2^{30}=2^{3.10}=8^{10}\);      \(\left(-3\right)^{20}=3^{20}=3^{2.10}=9^{10}\)

Do  \(8^{10}< 9^{10}\)nên   \(\left(-2\right)^{30}< \left(-3\right)^{20}\)

e) \(\left(-5\right)^9< 0\);   \(\left(-2\right)^{18}=2^{18}>0\)

Vậy  \(\left(-5\right)^9< \left(-2\right)^{18}\)

a) \(2^{24}< 3^{16}\)

b) \(3^{34}>5^{20}\)

c) \(\left(3\cdot24\right)^{100}< 3^{300}+4^{300}\)

d) \(199^{20}>200^{15}\)

`a)2^{300}=(2^3)^100=8^100`

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

Vì `9^100>8^100`

`=>2^300<3^200`

`b)3xx24^10`

`=3.(3.8)^10`

`=3^{11}.8^10`

`=3^{11}.2^30`

`2^300=2^{30}.2^{270}`

`=2^{30}.8^{90}`

Vì `3^11<8^90`

`=>3^{11}.2^30<8^{90}.2^30=2^300`

`=>3xx24^{10}<2^300+3^20+4^30`

a) Ta có \(\hept{\begin{cases}2^{24}=\left(2^6\right)^4=64^4\\3^{16}=\left(3^4\right)^4=81^4\end{cases}}\)

Mà \(64< 81\)

\(\Rightarrow64^4< 81^4\)

\(\Rightarrow2^{24}< 3^{16}\)

b) Ta có \(\hept{\begin{cases}2^{300}=\left(2^3\right)^{100}=8^{100}\\3^{200}=\left(3^2\right)^{100}=9^{100}\end{cases}}\)

Mà 8 < 9  

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

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

c) Ta có \(7^{20}=\left(7^4\right)^5=2401^5\)

Ta có 71 < 2401 

\(\Rightarrow71^5< 2401^5\)

\(\Rightarrow71^5< 7^{20}\)

!! K chắc câu c

@@ Học tốt

Chiyuki Fujito

a) \(2^{24}=\left(2^3\right)^8=8^8\)

\(3^{16}=\left(3^2\right)^8=9^8\)

Ta thấy 8<9\(\Rightarrow8^8< 9^8\Rightarrow2^{24}< 3^{16}\)

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

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

Thấy \(8< 9\Rightarrow8^{100}< 9^{100}\Rightarrow2^{300}< 3^{200}\)

c) \(7^{20}=\left(7^4\right)^5=2401^5\)

Ta thấy \(71< 2401\Rightarrow71^5< 2401^5\Rightarrow71^5< 7^{20}\)

1.a) 3/4 > 5/10

   b) 35/25 > 16/14

2.a) 7/5 > 5/7

  b) 14/16 < 24/21

HT nha

( bạn t.i.c.k cho mik nha, mik cảm ơn )

Tyyyyn

Bạn giúp mình câu này nhé so sánh 317/633 và 371/743 

a) Ta có: \(5^{36}=\left(5^3\right)^{12}=125^{12}\)

\(11^{24}=\left(11^2\right)^{12}=121^{12}\)

Vì \(125^{12}>121^{12}\) nên \(5^{36}>11^{24}\)

b) Ta có: \(5^{300}=\left(5^3\right)^{100}=125^{100}\)

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

Vì \(125^{100}< 243^{100}\) nên \(5^{300}< 3^{500}\)

c)Ta có: \(16^{19}=\left(2^4\right)^{19}=2^{76}\)

\(8^{20}=\left(2^3\right)^{20}=2^{60}\)

Vì \(2^{76}>2^{60}\) nên \(16^{19}>8^{20}\)

d) Ta có: \(625^5=\left(5^4\right)^5=5^{20}\)

\(125^7=\left(5^3\right)^7=5^{21}\)

Vì \(5^{20}< 5^{21}\) nên \(625^5< 125^7\)

a, Ta có : \(5^{36}=5^{3.12}=\left(5^3\right)^{12}=125^{12}\)

\(11^{24}=11^{2.12}=\left(11^2\right)^{12}=121^{12}\)

Vì : \(121^{12}< 125^{12}\Rightarrow11^{24}< 5^{36}\)

b,Ta có : \(5^{300}=5^{3.100}=\left(5^3\right)^{100}=125^{100}\)

\(3^{500}=3^{5.100}=\left(3^5\right)^{100}=243^{100}\)

Vì : \(125^{100}< 243^{100}\Rightarrow5^{300}< 3^{500}\)

c, Ta có : \(16^{19}=\left(2^4\right)^{19}=2^{76}\)

\(8^{20}=\left(2^3\right)^{20}=2^{60}\)

Vì : \(2^{76}>2^{60}\Rightarrow16^{19}>8^{20}\)

d, Ta có : \(625^5=\left(5^4\right)^5=5^{20}\)

\(125^7=\left(5^3\right)^7=5^{21}\)

Vì : \(5^{20}< 5^{21}\Rightarrow625^5< 125^7\)