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[::)., 6 2, 3 8, do, 6 8, B, 7. Does BA exist ? where A =, 9 4, 5 9, 8. Verify that AB exists and compute it:, 6 0, 9 5, [, 0 10 6, 9 20 12, where A =, ; в, %3D, -1 -2, [18]., [:], 1 2, 9. If A =, B=, C =, 3 4, 2-3, Show that A (B + C), = AB + AC and (AB) C, AB (C), %3D, [, 1, 4 1 0, 1 -2 2, 10. If A, B =, 6., 2 0-1, ans C, %D, 3 1 4, find a matrix X such that (3B – 2A) C + 2X = 0, |, 1, 2 3, 10 5, 0 1, 2 -1 1/, 1-1 0, 11. A, B, 1, 2 0 1, 1 -1 2, 2 -1 2, C =, 1, 0 1, Find (i) 2A + 3B- 4C, (ii) 4 (A – B + C), (iii) AB, -, (iv) BA, (v) A (В + C), (vi) AB - ВC, (vii) (AB) C., 12