Answer
$y^8(3x-2)^6(9xy-6y-5)$.
Work Step by Step
The given expression is
$=3y^9(3x-2)^7-5y^8(3x-2)^6$
Factor out the common factor $y^8(3x-2)^6$ from both terms.
$=y^8(3x-2)^6[3y(3x-2)-5]$
Simplify.
$=y^8(3x-2)^6(9xy-6y-5)$.
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