Answer:
A complex number is any number that can be written as \greenD{a}+\blueD{b}ia+bistart color greenD, a, end color greenD, plus, start color blueD, b, end color blueD, i, where iii is the imaginary unit and \greenD{a}astart color greenD, a, end color greenD and \blueD{b}bstart color blueD, b, end color blueD are real numbers.
Explanation: