Practice problem
Express (−2+i)(1−4i)(-2+i)(1-4i)(−2+i)(1−4i) in standard rectangular form, e.g. in the form a+bia+bia+bi with real numbers aaa and bbb.
2+9i2+9i2+9i
3+5i3+5i3+5i
8−4i8-4i8−4i
2−3i2-3i2−3i
Type a concept, like “slope” or “photosynthesis”.
