Well, we're to use the FOIL method, or First, Outer, Inner, and Last Multiplying Method. Example:
Observe the pattern - we multiplied the first terms in two binomials, then we multiplied the outer terms, and you knew the rest.
There are some of the patterns used like:
Notice that I only multiplied the first and last term, because we're to cancel the O and I in the method.
- Same Variable Multiplication
Notice that we had only to square the first term, add the two constants, and multiply the two constants also.