Question

tim x biet 3^2x=81

Answer 1

3^2x=81=3⁴

=>2x=4

x=4/2

x=2

Vậy x=2

Answer 2

3^2x = 81

=> 3^2x = 3⁴

=> 2x = 4

=> x = 2

*** cho mik nha !!!

Answer 3

3^2x=81

9^x=81

=>x=2

Vậy x=2

Answer 4

3^2x=81

9^x=81

9^x=9^2

=>x=2

tick cho mk nha bạn