Question

show that (-1+√3i)^3 is a real number​

Answer 1

Answer:

−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

It is a real number.