subtract (3x-5y²) +4xy from 10x² + 20xy - y²
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Answer:
10x² + 24xy - 6y² - 3x
Step-by-step explanation:
10x² + 20xy - y² - 3x - 5y² + 4xy
= 10x² + 20xy + 4xy - y² - 5y² - 3x
= 10x² + 24xy - 6y² - 3x
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