<PRE><B>Question 61963</B>
The given expression is: 


4a&lt;sup&gt;7&lt;/sup&gt; + 48a&lt;sup&gt;6&lt;/sup&gt; + 140a&lt;sup&gt;5&lt;/sup&gt; 


Taking 4a&lt;sup&gt;5&lt;/sup&gt; as a common factor, we get: 



4a&lt;sup&gt;5&lt;/sup&gt; (a&lt;sup&gt;2&lt;/sup&gt; + 12a + 35) 



This can be further written as: 


4a&lt;sup&gt;5&lt;/sup&gt; [a(a + 12) + 35] 



Hence, the solution. 




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