Consider three vectors A = 13.1i + 3.9j, B = 8.9i + 9.1j, and C = -2.1i - 16.8j. Part (a)  What is the result of 2A⋅(B - 3C)?  Part (b)  What is the result of A⋅A + B⋅B + C⋅C?

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