Solution - Power equations

Step  1  :

              z2 
 Simplify   —————
            z + 2

Equation at the end of step  1  :

   d     z2 
  —— • —————
  dz   z + 2

Step  2  :

             d
 Simplify   ——
            dz

Canceling Out :

 2.1    Canceling out d as it appears on both sides of the fraction line

Equation at the end of step  2  :

  1     z2 
  — • —————
  z   z + 2

Step  3  :

Dividing exponential expressions :

 3.1    z² divided by z¹ = z^{(2 - 1)} = z¹ = z

Final result :

    z  
  —————
  z + 2