Solution - Simplification or other simple results

Step  1  :

 1.1     6 = 2•3

(6)² = (2•3)² = 2² • 3²

Equation at the end of step  1  :

  ((2 • (22•32)) +  18) -  1

Step  2  :

Multiplying exponents :

 2.1    2¹  multiplied by  2²   = 2^{(1 + 2)} = 2³

Equation at the end of step  2  :

  ((23•32) +  18) -  1

Step  3  :

Final result :

  89