Answer:
-4y^3 + 4y^2 -6y + 25
Step-by-step explanation:
Combine like terms:
(-4y^3-5y+16)
+ (4y^2 - y +9)
----------------------------
-4y^3 + 4y^2 -6y + 25
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Answer:
-8+0
Step-by-step explanation:
Answer: Ola
Step-by-step explanation: