# How do you find the product of (n-3)(n+3)?

May 10, 2017

color(blue)(n^2-9

#### Explanation:

$\left(n - 3\right) \left(n + 3\right)$
$\textcolor{w h i t e}{\ldots \ldots \ldots \ldots \ldots \ldots \ldots .} n - 3$
$\textcolor{w h i t e}{\ldots \ldots \ldots \ldots \ldots . .} \times n + 3$
$\textcolor{w h i t e}{\ldots \ldots \ldots \ldots \ldots \ldots \ldots .} \overline{{n}^{2} - 3 n}$
$\textcolor{w h i t e}{\ldots \ldots \ldots \ldots \ldots \ldots \ldots \ldots .} + 3 n - 9$
color(white)(......................)overlinecolor(blue)((n^2" "-9)