Solution - Power equations

Step  1  :

 1.1     4 = 22

(4)² = (2²)² = 2⁴

Equation at the end of step  1  :

  24
  —— • -2
  4 

Step  2  :

            24
 Simplify   ——
            4 

Dividing exponents :

 2.1    2⁴   divided by   2²   = 2^{(4 - 2)} = 2²

Equation at the end of step  2  :

  4 • -2

Step  3  :

Final result :

  -8