Factor the expression [math]9x^2 + 169[/math].
[list=1] [*]Determine whether an identity can be used to rewrite the expression. [*]Identify [i]a[/i] and [i]b[/i] in the sum of squares. [*]Factor the sum of squares. [/list] This applet is provided by Walch Education as supplemental material for the [i]UCSS Secondary Math III[/i] program. Visit [url="http://www.walch.com"]www.walch.com[/url] for more information on our resources.