Practice problem
What is (−8+6i)+(6−6i)+(7+6i)(-8 + 6i) + (6 - 6i) + (7 + 6i)(−8+6i)+(6−6i)+(7+6i)?
21+6i21 + 6i21+6i
5+6i5 + 6i5+6i
212121
555
Type a concept, like “slope” or “photosynthesis”.
