Question

( z=-3-i quad z=a+b i )
( operatorname{Re}(z)=-3 quad b= ) realpart ( =-3 )
( operatorname{Im}(z)=-1 quad ) bar means change
( bar{z}=-3+i ) incry ( =-1 )
sign of gmaginary part ( begin{aligned} 1 z 1 &=sqrt{a^{2}+b^{2}} &=sqrt{(2)^{2}+(-1)^{2}}=sqrt{9+1}=sqrt{10} text { ans } end{aligned} )

# U 2. If z = -3 - i, find Re (z), Im(z), z and Izl.

Solution