### What Are Complex Numbers?

We know about the real numbers and imaginary numbers. However, there are types of numbers that combine both these types in one number system.
Complex numbers are a combination of real and imaginary numbers. Complex numbers are the fundamental concepts in advanced mathematics ad are applied in many real-life problems, particularly to electronics.
The standard for of complex numbers is written as 'a+bi', where 'a' is identified as the real part, and 'bi' is defined as the imaginary part. In complex number either part, real or imaginary can be zero.
A real number can be easily written on a number line, such as integers, fraction and other tangible values. However, imaginary numbers are the abstract mathematical concept that is utilized when you have to take a square root of a negative number.