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( P= left[ begin array rrr 1 & 2 & 1 3 & -3 & -1 2 & 1 & 0 end array right], Q= left[ begin array ccc a p^ 3 -m^ 3 & a q^ 3 -m^ 3 & a r^ 3 -m^ 3 p^ 2 & q^ 2 & r^ 2 p & q & r end ar | Suva Ai