What's the difference between an imaginary number and a complex number?

Answer 1

A complex number has a real and an imaginary part: z = a + i b

An imaginary number has only an imaginary part: z = i b

Answer 2

A complex number is an expression in the form of a+bi, where a and b are real numbers, and i is defined as the square root of -1. The variable a is the real part of the complex number, and bi is the complex part of the complex number. If a complex number has its real part a=0, then it is called a pure imaginary number. All real numbers can be expressed as complex numbers with the complex part b=0.

Answer 3

complex number has a real and imaginary part.

example : a + ib where a is the real part, "ib" is the imaginary part.

Imaginary numbers are complex numbers with the real part equal to zero (i.e, a = 0)

Answer 4

Complex = Real + Imaginary

6 = real
6i = imaginary
6 + 6i = complex

Of course, since, for example, 6 + 0i is both real and complex, I suppose you can think of reals as a subset of complex, ditto imaginary.