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(M= left[ begin array cc a-5 & 2 2 & a-2 end array right], N= left[ begin array ccc -1 & 2 & -3 2 & 1 & 0 4 & -2 & 5 end array right], P= left[ begin array ccc -2 & a+b & -c -2 & b | Suva Ai