Special Products

Each of the problems below is a link. If you click on the problem, it will take you to a YouTube video of a full, step-by-step solution for the problem. You may try these problems as practice and use the videos to check your answer, or you can just watch the videos to see more worked-out example problems.

Multiply using special products: left paren x + 9 right paren left paren x minus 9 right paren, left paren y + 3 right paren left paren y minus 3 right paren, and left paren 3z squared minus 20 right paren left paren 3z squared + 20 right paren
Multiply using special products: left paren a + 9 right paren left paren a + 9 right paren, left paren b + 4 right paren squared, and left paren 5c cubed + 3 right paren left paren 5c cubed + 3 right paren
Multiply using special products: left paren a minus 9 right paren left paren a minus 9 right paren, left paren b minus 6 right paren squared, and left paren 4c to the fifth minus 1 right paren squared
Multiply using special products: left paren 3x squared minus 2y right paren left paren 3x squared + 2y right paren, left paren 3x squared + 2y right paren left paren 3x squared + 2y right paren, and left paren 3x squared minus 2y right paren squared