Question

considerando que Z1=2+3i e Z2=1-4i
a) Z1+Z2=
b) Z1-Z2=

Answer 1

a)
$\begin{array}{crcc} &z_{1}=&&2+3i\\ &z_{2}=&+&\underline{1-4i}\\ &z_{1}+z_{2}=&&3-1i \end{array}$

b)
$\begin{array}{crcc} &z_{1}=&&2+3i\\ &z_{2}=&-&\underline{1-4i}\\ &z_{1}-z_{2}=&&1+7i \end{array}$