Add 8x^2 +7xy -6y^2,
4x^2 -3xy + 2y^2
and -4x^2 +xy -y^2
pls answer
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Answer:
8x² + 5xy - 5y²
Step-by-step explanation:
(8x² + 7xy - 6y²) + (4x² - 3xy + 2y²) + (- 4x² + xy - y²)
= 8x² + 7xy - 6y² + 4x² - 3xy + 2y² - 4x² + xy - y²
= 8x² + 4x² - 4x² + 7xy - 3xy + xy - 6y² + 2y² - y²
= 8x² + 5xy - 5y²
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