<PRE><B>Question 464012</B>
Obviously, Eric should&#39;ve used: &lt;a href = &quot;http://www.algebrahouse.com/&quot; target = &quot;_blank&quot;&gt;www.algebrahouse.com&lt;/a&gt;


He needs to multiply the (x + 3)(x - 3) first, using the foil method.
He&#39;s thinking of if they were equal to 0.


(x + 3)(x - 3) = -8
x² - 9 = -8 {used foil method}
x² = 1 {added 1 to both sides}
x = ±1 {took the square root of both sides}
&lt;br&gt;For more help from me, visit: &lt;a href = &quot;http://www.algebrahouse.com/&quot; target = &quot;_blank&quot;&gt;www.algebrahouse.com&lt;/a&gt;&lt;br&gt;&lt;br&gt;&lt;br&gt;</PRE>