Meaning of the word "complex number" in English

What does "complex number" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

complex number

US /ˈkɑːm.pleks ˈnʌm.bɚ/
UK /ˈkɒm.pleks ˈnʌm.bə/
"complex number" picture

Noun

a number that can be expressed in the form a + bi, where a and b are real numbers and i is the imaginary unit

Example:
In mathematics, a complex number consists of a real part and an imaginary part.
The square root of a negative number is a complex number.