What is a Complex Number?

It is a combination of a Real Number and an Imaginary Number

The imaginary number is, i, square root of −1

when we square imaginary number, i we get minus 1

The real numbers are numbers like 1, 2 3

When we combine a Real Number and an Imaginary Number we get a Complex Number

It solutions to all polynomial equations

It is used in electronics and electromagnetism

It is of the form a + b, i, where a and b are real numbers, and i is an imaginary number