Add as indicated.(5x2 + 5xy + y2) + (5x2 + 3xy - y2) + (x2 + xy - y2)

A. 11x2 + 9xy - y2
B. 10x2 + 8xy - y2
C. 9x2 + 7xy - y2
D. 11x2 + 9xy + y2


Answer: A

Mathematics

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