Answer:
-4y² + 12y - 8
Explanation:
-6y² + 9y² - y - 9 - 7y² + 1 + 10y + 3y
-6y² + 9y² - 7y² - y + 10y + 3y - 9 + 1
Answer: -4y^(2)+12y-8
Step-by-step explanation: Combine like terms
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