Respuesta :

mel17G

Answer:

-3x^3+7y^2+9y

Step-by-step explanation:

y - y² + 4y + 7y² – 3 x3 + y² + 4y​

Combine Like Terms:

=y+−y2+4y+7y2+−3x3+y2+4y

=(−3x3)+(−y2+7y2+y2)+(y+4y+4y)

=−3x3+7y2+9y

livin2dayoy1txj
9y + 7y squared - 9x. (Not sure if you wrote the 3 x3 correctly?)
good job