<PRE><B>Question 154149</B>
72y to the 4th - 24y to the 3rd + 2y to the 2nd
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72y^4 -24y^3 + 2y^2

= 2y^2(36y^2 - 12y + 1)

= 2y^2 (6y-1)(6y-1)
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Cheers,
Stan H.</PRE>