How do you add and subtract polynomials

You add and subtract polynomials based on what their exponent is.

Step-by-step explanation:

If they have the same exponent and they want you to add or subtract it, add and/or subtract it like normal numbers.

Your first step is to change the subtraction problem to an addition problem. Then you add, just as you did in the adding polynomials lesson. Let's take a look at an example. Once we change this problem to an addition problem, we will use the horizontal method for solving.

Step-by-step explanation:

You add polynomials when there are plus signs. You subtract them when there is a minus sign. Remember to only add/subtract like terms within the polynomials.