[i]z=x+iy[/i]
vector{[i]z[/i]}=[i]x-iy[/i]
[i]z^2=(x+iy)^2[/i]
[i]z^2*i*vector{z}=(x+iy)^2*i*(x-iy)=(x+iy)*(x-iy)*(xi+i^2y)=
=(x^2+y^2)*(xi-y)=-y(x^2+y^2)+i*x*(x^2+y^2)[/i]
[i]Im(z^2*i*vector{z})[/i]=x*(x^2+y^2)=x^3+xy^2
2.
z=(2i+1)(1-2i)^2+i*(2+3i)=
=(1-(2i)^2)*(1-2i)+2i+3i^2=
=(1+4)*(1-2i)+2i-3=
=5-10i+2i-3=
=2-8i
О т в е т. y=-8