1) 3⁵ . 4⁵ = (3.4)⁵ = 12⁵

2) 8⁵ . 2³ = 2¹⁵ . 2³ = 2¹⁸

3^5. 4^5 = {3.4}^5 =12^5

8^5 .2^3 = 2^15.2^3 =2^18

thank you 2 ban

a, \(3^5.4^5=\left(3.4\right)^5=12^5\)

b, \(8^5.2^3=8^5.8=8^6\)

a)

\(3^5.4^5=\left(4.3\right)^5=12^5\)

b)

\(8^5.2^3=\left(2^3\right)^5.\left(2^3\right)^1=\left(2^3\right)^6=2^{18}\)

Viết kết quả phép tính dưới dạng một lũy thừa :

a, 12⁵

b , 8^5.. 8= 8⁶

giúp mình nha

\(3^5\cdot4^5=12^5\)

\(8^5\cdot2^3=8^6\)

a) a³.a⁵ = a³⁺⁵ = a⁸

b) x⁷.x.x⁴ = x⁷⁺¹⁺⁴ = x¹²

c) 3⁵.4⁵ = (3.4)⁵ = 12⁵

d) 8⁵.2³ = 2⁵.2⁵.2⁵.2³ = 2^5+5+5+3 = 2¹⁸

a/a\(^3\).a\(^5\)=a\(^8\)

b/x\(^7\).x.x\(^4\)=x\(^{12}\)

c/3\(^5\).4\(^5\)=2\(^{10}\).3\(^5\)

d/8\(^5\).2\(^3\)=2\(^{18}\)

a) a³.a⁵₌a³⁺⁵_=a⁸

b)x⁷.x.x^4₌x⁷⁺¹⁺⁴=x¹²

c)3⁵.4⁵=( 3.4)⁵=12⁵

d)8⁵.2³=8⁵.(2.2.2)=8⁵.8=8⁵⁺¹=8⁶

1.
a) \(3^4\times3^5\times3^6=3^{4+5+6}=3^{15}\)

b) \(5^2\times5^4\times5^5\times25=5^2\times5^4\times5^5\times5^2=5^{2+4+5+2}=5^{13}\)

c) \(10^8\div10^3=10^{8-3}=10^5\)

d) \(a^7\div a^2=a^{7-2}=a^5\)

2.

\(987=900+80+7\\ =9\times100+8\times10+7\\ =9\times10^2+8\times10^1+7\times10^0\)

\(2021=2000+20+1\\ =2\times1000+2\times10+1\times1\\ =2\times10^3+2\times10^1+1\times10^0\)

\(abcde=a\times10000+b\times1000+c\times100+d\times10+e\times1\\ =a\times10^4+b\times10^3+c\times10^2+d\times10^1+e\times10^0\)

còn bài 2

3⁵ . 4⁵  = ( 3.4 )⁵ = 12⁵

8⁵ . 2³ = ( 2⁴ )⁵ . 2³ = 2²⁰ . 2³ = 2^{20 + 3} = 2²³

kb với mk nha các bạn

3⁵.4⁵.8⁵.2³= (3 . 4 . 8)³ . 8

3⁵ ; 4⁵ ; 8⁵ ; 2³

\(8^5.2^3\)

\(=\left(2^3\right)^5.2^3\)

\(=2^{15}.2^3\)

\(=2^{18}\)

Ta có: \(8^5=\left(2^3\right)^5=2^{15}\)

\(\Rightarrow8^5.2^3=2^{15}.2^3=2^{18}\)

Đáp số: \(2^{18}\)

a) \(3^3 : 3^2\)=\(3^{3-2}=3^1\)

b) \(5^{4} : 5^{2}\)=\(5^{4-2}=5^2\)

c) \(8^{3} . 8^{2}\)=\(8^{3+2}=8^5\)

d) Cách 1:

\(5^{4} . 5^{3}: 5^{2}=5^{4+3}:5^2=5^7:5^2=5^{7-2}=5^5\)

Cách 2: 

\(5^{4} . 5^{3}: 5^{2}=5^{4+3-2}=5^5\)