Question

if 3*-3*-¹ = 18, then the value of x*is​

Answer 1

Step-by-step explanation:

3^x - 3^(x-1) = 18

3^x-3^x.3^-1=18

3^x(1-1/3)=18

3^x=18*3/2

3^x=27

3^x=3^3

here x=3

then , x^x=3^3=27

Answer: 27