Câu hỏi của Đào Lê Tuấn Tú

Question

a)      (a5)<span style="vertical...

Nguyễn Việt Hoàng · Accepted Answer

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

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

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

Câu trả lời:

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

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

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

Phùng Phạm Quỳnh Trang · Answer

( 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}

Câu trả lời:

( 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}