5y² - 2xy + 3x² - 3x² - 5xy + 7y²
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Answered by
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Answer:
12y²-5xy
Step-by-step explanation:
5y²-2xy+3x²-3x²-5xy+7y²
(5y²+7y²)-(2xy+3xy)+(3x²-3x²)
12y²-5xy+0
12y²-5xy
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