Answer:
[tex]5y^{3} -13y^{2} -5y[/tex]
Step-by-step explanation:
[tex]3y^{2} -2y[4y - y(y-3)] - [2y(y + 1)-3y(y^{2} -1)] \\\\3y^{2} -2y[4y - y^{2} +3y] - [2y^{2} +2y- 3y^{3}+3y] \\\\3y^{2}- 8y^{2}+2y^{3}- 6y^{2}- 2y^{2}- 2y+3y^{3}- 3y\\\\5y^{3}- 13y^{2}- 5y[/tex]
