Multiplication
Sum and Difference Patterns
Examples
Example 1 Multiply the binomials & simplify.
(2x3 + 7)(2x3 - 7)
Step 1. Multiply.
(2x3)2 - 72
Step 2. Simplify & rewrite in standard form.
4x6 - 49
Example 2 Multiply the binomials & simplify.
(4x + 5y)(4x - 5y)
Step 1. Multiply.
(4x)2 - (5y)2
Step 2. Simplify & rewrite in standard form.
16x2 - 25y2