5. Subtract the sum of 3x2 + 5xy + 7y2 + 3 and 2x2 - 4xy – 3y2 + 7 from 9x2 - 8xy +
11y2
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Answer -: 4x² - 9xy + 7y² - 10
Step-by-step explanation:
3x²+ 5xy +7y²+3
2x²- 4xy - 3y²+7
+____________
5x² + xy + 4y²+10. ( I )
9x² - 8xy + 11y² ( II )
( II ) - ( I )
4x² - 9xy + 7y² - 10
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