Answer
$$12y^4-16y^3+3y^2+5y-2.$$
Work Step by Step
We simplify by distributing and then combine similar terms as follows:
$$(6y^3 -5y^2 - y + 2)(2y - 1)\\=12y^4-10y^3-2y^2+4y
-6y^3 +5y^2 + y - 2\\
=12y^4-16y^3+3y^2+5y-2.$$
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