Solution - Simplification or other simple results

Step  1  :

            a
 Simplify   —
            a

Equation at the end of step  1  :

  ((((((a6x6•1)•x)•a)•x)•a)•x)•a
 Step  2  :

Multiplying exponential expressions :

 2.1    a⁸ multiplied by a¹ = a^{(8 + 1)} = a⁹

Final result :

  a9x9