Question

WHICH COULD BE THE VALUE OF x when 4+3x is a complex number?

2^-2
2
i

Answer 1

The first thing you should know is that by definition complex numbers in their generic form are given by:
 a + bi
 We have then that in this case:
 a = 4
 b = 3
 x = i
 Answer:
 The value of x when 4 + 3x is a complex number is:
 i (option 3)