Find each sum.(3n2 – 5n + 6) + (–8n2 – 3n – 2) =

Combine like terms: the quadratic terms give 3n² + (−8n²) = −5n², the linear terms give −5n + (−3n) = −8n, and the constants give 6 + (−2) = 4. The sum is −5n² − 8n + 4, which is choice C.

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