show that(-1+√3i)^3 is a real number.
Answers
Answered by
0
⇒(−1+3 i) ^3
⇒−1+3
3
i−3(−3)−3
3
i [∵(a−b)
3
=a
3
−b
3
−3ab(a−b)]
⇒−1+9=8
Similar questions