Answer:
Complex numbers
Step-by-step explanation:
Given
[tex](5 + i)[/tex] and [tex](5 - i)[/tex]
Required
Determine what both factors are called
From the list of given options. option "complex numbers" answer the question correctly
This is because when numbers are written in form [tex]a + bi[/tex] where [tex]b \neq 0[/tex] and [tex]i = \sqrt{-1}[/tex]; such a number are referred to as complex number
Some other examples are:
[tex]-7 + 3i[/tex]
[tex]2 - 7i[/tex]
[tex]4 + i[/tex]
And lots more
