How do you multiply polynomials horizontally?

To multiply two polynomials:
multiply each term in one polynomial by each term in the other polynomial.
add those answers together, and simplify if needed.
or,
Here are the steps required for Multiplying Polynomials:

Step 1: Distribute each term of the first polynomial to every term of the second polynomial. Remember that when you multiply two terms together you must multiply the coefficient (numbers) and add the exponents.
Step 2: Combine like terms (if you can).