Let Z1=3+4i and |Z2|=1, then
maximum value of |+| is 6
Maximum value of |+| is 7
Minimum value of |+| is 4
Minimum value of |+| is 3
Maximum value of |Z1+Z2| is |Z1|+ |Z2| and the minimum value is | |Z1|- |Z2| | ⇒ 5+1 and 5-1 ⇒ 6 and 4