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Step-by-step explanation:
5x²y - 5x² + 3x²y - 3y² +x² - y² + 8xy² - 3y²
= 5x²y+3x²y - 5x²+x² -3y² - y² -3y² +8xy²
= 8x²y - 4x² -7y² +8xy²
hope it helps you
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