A bicomplex number is like a special type of number that has two parts instead of just one. Imagine you have two piggy banks, one for your money and one for your toy coins. Then, if you put the two piggy banks next to each other, you can see them both at the same time. This is like a bicomplex number, which has two parts called real and imaginary, just like two piggy banks side by side.
Each part of the bicomplex number works like a regular number. The real part stands for the normal number you might be used to, like counting how many apples you have. The imaginary part is like a secret number that helps you do some cool math, kind of like a special tool you have to help you solve problems in math class.
When you do math with bicomplex numbers, you have to be careful to keep track of both parts separately, just like you might keep track of your money and toy coins in separate piggy banks. But if you do it right, you can use these special numbers to solve all sorts of problems in math, science, and engineering. Pretty cool, right?