a) \(3^5.3^7=3^{5+7}=3^{12}\)

b) \(a^5.a=a^{5+1}=a^6\)

c) \(5^4:5^3=5^{4-3}=5^1=5\)

d) \(a^3:a^3=a^{3-3}=a^0=1\)

a) \(3^5.3^7=3^{12}\)

b) \(a^5.a=a^6\)

c) \(5^4:5^3=5\)

d) \(a^3:a^3=1\)

\(3^3.3^4=2187\)

\(5^2.5^7=1953125\)

\(7^{5.7}=7^{35}\)

3^3.3^4=3^7=2187

5^2.5^7=5^9=1953125

7^5.7=7^6=117649

bn k mik nhoa!

\(3^3.3^4=3^{3+4}=3^7\)

\(5^2.5^7=5^{2+7}=5^9\)

\(7^5.7=7^{5+1}=7^6\)

a,3³.3⁴=3⁷

b,5².5⁷=5⁹

c,7⁵.7=7⁶

a) 3³ . 3⁴ = 3⁷

b) 5² . 5⁷ = 5⁹

c) 7⁵ . 7 = 7⁶

a, 3³ . 3⁴ = 3⁷

b, 5² . 5⁷ = 5⁹

c, 7⁵ . 7 = 7⁶

\(a,3^3.3^4=3^{3+4}=3^7\)

\(b,5^2.5^7=5^{2+7}=5^9\)

\(c,7^5.7=7^{5+1}=7^6\)

a) 3^7=2187

b) 5^9=1953125

c) 7^6=117649

a) \(5^3.5^2.5\)

\(=5^{3+2+1}\)

\(=5^6\)

b) \(7^3.7.7^4\)

\(=7^{3+1+4}\)

\(=7^8\)

`7^3 . 7^5 = 7^(3+5)=7^8`

7³ + 7⁵ 

= 7^{3 + 5}

= 7⁸

\(2^7.5^7=\left(2.5\right)^7=10^7\)

Cảm ơn bn 

a) Ta có : 3⁴ . 3⁵ = 3^{4 + 5} = 3⁹

b) Ta có : 5⁵ . 5⁷ = 5^{5 +7} = 5¹²

c) Ta có : 9². 27³ = (3²)² = (3³)³ = 3^2.2 . 3^3.3 = 3⁴. 3⁹ = 3^{4+ 9} = 3¹³

d) Ta có : 8³ . 16⁴ = (2³)³ . (2⁴)⁴ = 2^3.3 . 2^4.4 = 2⁹ . 2¹⁶ = 2²⁵

Chúc bạn học tốt

a)\(3^4.3^5=3^4-^5=3^9\)

b)\(5^5.5^7=5^5+^7=5^{12}\)

c)\(9^2.27^3=\left(3^2\right)^2=\left(3^3\right)^2=3^2^2:3^9=3^4+9=3^{13}\)

d)\(8^3.16^4=\left(2^3\right)^3.2^4=2^{3.3}.2.44=2^9.2^{16}=2^{15}\)

~Study well~ :)