Exponents and power quotient

Question

[(3x)²(3x^-2)/3x²]² 

Answer 1

I assume you want the expression to be simplified.  Working left to right, then from the inside out,

 

[(3x)²(3x^-2)/(3x²)]² = [(9x²)(3/x²) / (3x²)]² = [27 / (3x²)]² = [9 / x²]² = 81 / x⁴