Question

pls can anyone solve this​

Answer 1

Answer:

1)

alpha + beta = (-1+i√3-1-i√3)/2

=-2/2=-1

2)

alpha×beta= (-1+i√3)x(-1-i√3)4

=1+i√3-i√3-3i²/4

= 1-(-1)×3/4

=1-(-3)/4

=4/4=1

Answer 2

Answer:

(i)

$\frac{ - 1 + i \sqrt{3} }{2} + \frac{ - 1 - i \sqrt{3} }{2 } \\ \\ \frac{ - 1 + i \sqrt{3} - 1 - i \sqrt{3} }{2} \\ \\ \frac{ - 2}{2} \\ \\ - 1$