Answer:
−2y2−2y+7
Step-by-step explanation:
−4y−7y2+5y2+7+4y−2y
=−7y2+5y2+7+0−2y
=−2y2+7+0−2y
=−2y2−2y+7
7-2y-2y^2
2-4y-7y^2+5y^2+5+4y-2y
7-4y-7y^2+5y^2+4y-2y
7-2y-7y^2+5y^2
