In Exercises 2528, confirm the identities without evaluating the determinants
Chapter 2, Problem 27(choose chapter or problem)
In Exercises 2528, confirm the identities without evaluating the determinants directly.a1 + b1 a1 b1 c1 a2 + b2 a2 b2 c2 a3 + b3 a3 b3 c3 = 2 a1 b1 c1 a2 b2 c2 a3 b3 c3
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