10x² - 3xy + y² + 8 - 10 + 3y² - 2xy
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Answer:
10x² - 5xy + 4y² - 2
Step-by-step explanation:
=10x² - 3xy + y² + 8 - 10 + 3y² - 2xy
=10x² - 5xy + 4y² - 2
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