Find the matrix product ABC by grouping the factors as (AB)C and grouping the factors as A(BC). Show that you obtain the same result from both processes. +H489-3 1 -6 0 B = -5 44 A = (a) -2 5 1 AB ↓ 1 (AB)C (b) BC ↓ 1 ↓↑ A(BC) ↓↑ C= -4 2 01 -1 1

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