Question

64.4^x =16⁸

tim x

Answer 1

x=13

h nha lấy 16^8 : cho 64 ra kq rồi cho mũ 4 lên là dc k mik nha

Answer 2

ban giai gium di

Answer 3

\(64\cdot4^x=16^8\)

\(2^6\cdot2^{2x}=2^{32}\)

\(2^{6+2x}=2^{32}\)

=> 6 + 2x = 32

=> 2x = 26

=> x = 13

Answer 4

Tìm x :

64 . 4^x = 16⁸

<=> 4³ . 4^x = ( 4² )⁸ 

<=> 4³ . 4^x = 4¹⁶ 

<=> 4^x = 4¹⁶ : 4³ 

<=> 4^x = 4^16-3

<=> 4^x = 4¹³ 

=> x = 13 

Vậy x = 13 

Answer 5

\(64.4^x=16^8\)

\(\Leftrightarrow4^3.4^x=\left(4^2\right)^8\)

\(\Leftrightarrow4^{3+x}=4^{16}\)

\(\Leftrightarrow3+x=16\)

\(\Leftrightarrow x=16-3\)

\(\Leftrightarrow x=13\)

Vậy ............