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The expansion of (3a-4b-2c)2² is:

A9a²+16b²+4c²-24ab + 8bc + 12ac

B9a² + 16b² + 4c² + 12ab-8bc + 6ac

C9a² + 16b² + 4c²-24ab+16bc-12ас

D9a² + 16b² + 4c²-24ab + 16bc- бас

Answer:

C. 9a² + 16b² + 4c²-24ab+16bc-12ас


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