<PRE><B>Question 36441</B>
      -7a^2
-----------------------
35a^8-28a^6-14a^3+21a^2


      -7a^2
-----------------------
7a^2(5a^6-4a^4-2a+3)


Removing the common term 7a^2, we get 

      -1
--------------------
  (5a^6-4a^4-2a+3)</PRE>