Answer:
2y2+9y−10
Step-by-step explanation:
Distribute the Negative Sign:
=−2y2+6y−1+−1(−4y2−3y+9)
=−2y2+6y+−1+−1(−4y2)+−1(−3y)+(−1)(9)
=−2y2+6y+−1+4y2+3y+−9
Combine Like Terms:
=(−2y2+4y2)+(6y+3y)+(−1+−9)
=2y2+9y+−10
