It is really just distribution. You just have to do it twice. Double the distribution, double the fun!

The picture above represents the multiplication of (2x + 1)(x - 3). When using this method you need to make sure the sign of each term is correct. Note the minus 3 is a negative 3!

Khan Academy - Multiplying Binomials

Learn about the mysterious FOIL method that used to be commonplace in every math class. Notice the differences between my video and Khan's video. The FOIL method has limitations because it only works when you are multiplying two binomials. As you will see later on in the unit it makes more sense to think about distribution when multiplying to polynomials together because the idea of distribution works for all examples.

Multiplying Binomials Using a Matrix

I like this example and I suggest you use it to answer many of the questions off of your worksheet.

IXL - Multiplying two binomials (70 or Higher)

Quia/Worksheet - Multiplying Polynomials

Multiplying Special Cases

Multiplying Binomials (Special Cases)

Look for similar problems to pick up on short cuts. Remember, you can always rely on distribution if you forget the shortcuts.

IXL - Multiplying two binomials (special cases) 80 or Higher

Quia/Worksheet - Multiplying special case polynomials