Relax

Respuesta :

Answer:

[tex]21y^{3} - 4y^{2} + 11y[/tex]

Step-by-step explanation:

[tex]11y + 7y(3)y^{2} - 4y^{2}[/tex]

=11y + 21y^3 +-4y^2

[tex]=21y^{3}-4y^{2}+11y[/tex]