please solve this
x²-2xy+y²+3x²+4xy-y²-2x²+5xy+4y²
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Answer:
2x² + 4y² + 7xy
Step-by-step explanation:
x² - 2xy + y² + 3x² + 4xy - y² - 2x² + 5xy + 4y²
= x² + 3x² - 2x² + y² - y² + 4y² - 2xy + 4xy + 5xy
= 2x² + 4y² + 7xy
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