You've got the 2w bit right, but you haven't followed through on your original equation.
Divide 2w^3 by 2w
Divide 6w^2 by 2w
Divide 4w by 2w
Put 'em all back together. What have you got now?
Factor each polynomial:
2wcubed + 6wsquared - 4w
I got...2w(2wsquared - 2)
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