Question

What are the roots of the following polynomial equation?
(x + 5)(x + 5i)(x - 5i) = 0

Answer 1

(x-x1)(x-x2)(x-x3)...(x-xk)=0
roots
are
x1, x2,x3,...
because
x-x1=0 ---> x=x1
and so on

so
(x + 5)(x + 5i)(x - 5i) = 0 -->
x+5=0 x=-5
x+5i=0 x=-5i
x-5i=0 x=5i
but 5 is a real root
5i ,-5i are imaginary root (complex roots)

Answer 2

ok so are my roots -5, 5i and -5i???

Answer 3

is anyone there?

Answer 4

yes
-5, 5i and -5i