Question

9x-2.3² = 3⁴

Answer 1

\(9x-2\times3^2=3^4\)

\(3^2\times x-2\times3^2=3^4\)

\(3^2\times\left(x-2\right)=3^4\)

           \(x-2=3^4\div3^2\)

           \(x-2=3^2\)

           \(x-2=9\)

                 \(x=9+2\)

                 \(x=11\)

Answer 2

\(9x-2.3^2=3^4\)

\(3^2.x-2.3^2=3^4\)

\(3^2.\left(x-2\right)=3^4\)

\(x-2=3^2\)

\(x-2=9\)

\(x=11\)

 

Answer 3

9x - 2.3² = 3⁴

9x - 2.9 = 81

9x - 18 = 81

9x = 81 + 18

9x = 99

x = 99 : 9

x = 11