Question

Show that (-1 + V3i) is a real number.​

Answer 1

Answer:

(-1+√3i)³

(1-√3i)³

→(√3i)³-1-√3i(√3i-1)

→-3-√3i-1-9i²+3√3i

→-1+9

=8

Hence,8 is a real number.