Question

Tìm x biết 3^32-2x=9¹³

Answer 1

3^{32 - 2x} = 9¹³

=> 3³² : 3^2x = (3²)¹³

=> 3³² : 3^2x = 3²⁶

=> 3^2x = 3³² : 3²⁶

=> 3^2x = 3⁶

=>2x = 6

=> x = 3

Answer 2

\(3^{32-2X}=9^{13}\)

(=) \(3^{32-2X}=3^{26}\)

=>32-2X=26

(=)2X=6

(=)X=3

Answer 3

\(3^{32-2x}=9^{13}\)

\(\Rightarrow32-2x=13.2=26\)

\(\Rightarrow2x=32-26=6\)

\(\Rightarrow x=3\)

Answer 4

\(3^{32-2x}=9^{13}\)

\(\Leftrightarrow3^{32}:3^{2x}=3^{26}\)

\(\Leftrightarrow3^{2x}=3^6\)

\(\Leftrightarrow2x=6\)

\(\Leftrightarrow x=3\)

Answer 5

3^{32 - 2x} = 9¹³

=> 3³² : 3^2x = (3²)¹³

=> 3³² : 3^2x = 3²⁶

=> 3^2x = 3³² : 3²⁶

=> 3^2x = 3⁶

=>2x = 6

=> x = 3

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