Polynomials are expressions such as 4x³+2x²+9x+4.
Adding Polynomials is a very simple concept
as long as you know the rules to adding them.
A typical Polynomial Addition Problem would look something like:
(2x²+3x+7) + (6x²+10x+1) = ?
When you add Polynomial equations
you can only add the numbers together
that have the same variables after the number.
For example, you could not add 5x² and 4x together.
BUT… you could add 5x² and 4x² together.
So, in the problem a few lines up, you could only add the 2x² to the 6x²
and only the 3x to the 10x
and only the 7 to the 1,
because they all have the same signs following the number.
So, the answer to the problem would be (8x²+13x+8).
This concept is called the adding of "like terms."
Follow that simple rule and adding polynomials is very easy.