But each form of the distributive law can used in two ways. This process is called expansion or distribution of multiplication over addition. This process is called factorization. When an expression is factored, the nonzero product rule can be used to say when that expression will be zero or not. From factorization comes solution method for equations and inequalities.
Similar remarks hold for the right distributive law.
Suppose Z and W are arrows in the plane with tails or initial points at the origin. Before showing or deriving how to multiply these factors together using the rectangular coordinates of their head locations, we will show how to compute the product using horizontal and vertical components. AD by the distributive law. All trademarks and copyrights on this page are owned by their respective owners. Copyright to comments contributions are owned by the Poster.