Subtract (3 + 2i) from (–9 – 8i).

Subtract (3 + 2i) from (−9 − 8i) by calculating (−9 − 8i) − (3 + 2i). Subtract the real parts and imaginary parts: (−9 − 3) + (−8 − 2)i = −12 − 10i. The correct choice is C, −12 − 10i.

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