Solution - Power equations

Step  1  :

 1.1     4 = 22

(4)² = (2²)² = 2⁴

Equation at the end of step  1  :

Step  2  :

 2.1     4 = 22

(4)³ = (2²)³ = 2⁶

Equation at the end of step  2  :

Step  3  :

            26
 Simplify   ——
            24

Dividing exponents :

 3.1    2⁶   divided by   2⁴   = 2^{(6 - 4)} = 2²

Final result :

  4