Complete the statement. (3a2 – 5ab + b2) – (–3a2 + 2b2 + 8ab) =

Subtracting the second polynomial means changing the sign of each of its terms: (3a² − 5ab + b²) + (3a² − 2b² − 8ab). Combine like terms: 3a² + 3a² = 6a², −5ab − 8ab = −13ab, and b² − 2b² = −b². The result is 6a² − 13ab − b², choice A.

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