How do you cube 1+3i?

segnverd3a

segnverd3a

Answered

2022-02-02

How do you cube 1+3i?

Answer & Explanation

logik4z

logik4z

Expert

2022-02-03Added 8 answers

Binomial expansion
(1+3i)3=13+3(12)(3i)+3(1(3i)2)+(3i)3
=1+33i+332i2+33i3
=1+33i+9i2+33i3
=1+33i933i
=(19)+(3333)i
=8
ocretz56

ocretz56

Expert

2022-02-04Added 16 answers

Using De Moivres

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