You can put this solution on YOUR website! y^2(1-2y)(2+3y)[use the FOIL method to multiply]
y^2(2+3y-4y-6y^2) [distribute the y^2 term]
2y^2+3y^3-4y^3-6y^4 [re-arrange the terms in descending order of degree]
-6y^4-4y^3+3y^+2y^2 [combine like-terms]
-6y^4-y^3+2y^2