Find the product of the complex numbers (-5+ 8i) and (3 - 8i)

Question

asked Jun 5, 2021 118k views

1 Answer

Jpprade · Answer 1 · 2021-06-10T08:48:30+0000

Answer: 49+64i

Explanation:

Concept to know:

i=√-1

i²=-1

i³=-i

i^(4) =1

-------------------------------------

(-5+8i)(3-8i)

=-15+40i+24i-64i²

=-15+64i-64i²

=-15+64i+64 (remember, i²=-1)

=49+64i

Hope this helps!! :)

Please let me know if you have any question or need further explanation