A. 5√41
B. 5/√41
C. √5/41
D. √5/√41
The conjugate of (1+2i) (2-3i) is
If x=-5+4i then x4+9x3+35x2-x+4=
The modules of √3+i/(1+i)(1+√3i) is
(1+ω-ω2) (1-ω+ω2)=