Question

[Đào Lê Tuấn Tú]

a)      (a⁵)⁷                         (a³)⁴ . a⁹               (2³)⁵.(2³)⁴

Answer 1

[Nguyễn Việt Hoàng]

\(\left(a^5\right)^7=a^{5.7}=\text{a}^{35}\)

\(\left(a^3\right)^4.a^9=a^{12}.a^9=a^{12+9}=a^{21}\)

\(\left(2^3\right)^5.\left(2^3\right)^4=2^{15}.2^{12}=2^{15+12}=2^{27}\)

Answer 2

[Phùng Phạm Quỳnh Trang]

( a⁵ ) ⁷ = 5^{5 + 7} = 5^{1 2}

( a ³ ) ⁴ . a⁹ = a^{3 + 4} . a⁹ = a⁷ . a⁹ = a ^{7 +9} = a^{1 6} 

(2³ ) ⁵ . ( 2³ ) ⁴ = 2^{3 + 5} . 2 ^{3 +4} = 2⁸ . 2⁷ = 2^{8 + 7} = 2^{1 5}