Solution - Simplification or other simple results

Step  1  :

 1.1     4 = 22

(4)² = (2²)² = 2⁴

Equation at the end of step  1  :

  (42) • 24

Step  2  :

 2.1     4 = 22

(4)² = (2²)² = 2⁴

Equation at the end of step  2  :

  24 • 24

Step  3  :

Multiplying exponents :

 3.1    2⁴  multiplied by  2⁴   = 2^{(4 + 4)} = 2⁸

Final result :

  28