<PRE><B>Question 636587</B>
  &lt;pre&gt;&lt;font face = &quot;Tohoma&quot; size = 3 color = &quot;indigo&quot;&gt;&lt;b&gt; 
Hi,
W^2-49z^2 = (W - 7z)(W + 7z)
Check factoring using FOIL
F	First terms
O	Outside terms
I	Inside terms
L	Last terms

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