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( begin array l A= left[ begin array ccc a^ 2 & b^ 2 & c^ 2 a^ 3 & b^ 3 & c^ 3 a^ 4 -2 a & b^ 4 -2 b & c^ 4 -2 c end array right], P= left[ begin array rr -3 & 2 3 & -1 end array r | Suva Ai