Question

3^x-2-24.3²=3².3

 

Answer 1

        3^x-2 -24 . 3² = 3² . 3

<=> 3^x-2 -216 = 27

<=> 3^x-2 =243

<=> 3^x-2 = 3⁵

<=> x-2 = 5

<=> x = 7

Answer 2

\(3^{x-2}-24\cdot3^2=3^2\cdot3\)

\(3^{x-2}-24\cdot9=9\cdot3\)

\(3^{x-2}-216=27\)

\(3^{x-2}=27+216=243\)

\(\Rightarrow3^{x-2}=3^5\)

\(\Rightarrow x-2=5\)

\(\Rightarrow x=5+2=7\)

tk mk nha. ~CHÚC BẠN HỌC TỐT~

Answer 3

3^x-2 - 24 . 3² = 3² . 3

3^x-2 - 24 . 9 = 27

3^x-2 - 24 = 27 : 9

3^x-2 - 24 = 3

3^x-2 = 3 + 24

3^x-2 = 27 = 3³

=> x - 2 = 3

     x = 3 + 2

     x = 5

Answer 4

3^x-2-216=27

3^x-2=27+216

3^x-2=243

3^x-2=3^5

=>x-2=5

x=7