Solution - Power equations

Step  1  :

 1.1     4 = 22

(4)⁵ = (2²)⁵ = 2¹⁰

Equation at the end of step  1  :

Step  2  :

 2.1     4 = 22

(4)⁸ = (2²)⁸ = 2¹⁶

Equation at the end of step  2  :

Step  3  :

            216
 Simplify   ———
            210

Dividing exponents :

 3.1    2¹⁶   divided by   2¹⁰   = 2^{(16 - 10)} = 2⁶

Final result :

  64