Answer:
3x²y² - 7x²y² + 8xy -9+11 -10 zy
= -4x²y² + 8xy - 20- 10 zy
3x2y2+8xy-9-10zy-7x2y2+11
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Verified answer
Answer:
3x²y² + 8xy - 9 - 10zy - 7x²y² + 11
3x²y² - 7x²y² + 8xy -9+11 -10 zy
= -4x²y² + 8xy - 20- 10 zy
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Answer:
3x2y2+8xy-9-10zy-7x2y2+11