###### Example 6.7.13 The Product of the Sum and Difference of Two Terms

Recall that FactÂ 6.5.12 gives a formula to help multiply things that look like \((a+b)(a-b)\text{.}\)

Simplify the expression \((7x+4)(7x-4)\text{.}\)

Recall that FactÂ 6.5.12 gives a formula to help multiply things that look like \((a+b)(a-b)\text{.}\)

Simplify the expression \((7x+4)(7x-4)\text{.}\)