题目内容：

求方阵的逆矩阵
1 2 3
2 2 1
3 4 3
我算了几次跟正确答案都有差距,求正解.

优质解答

123 100221 010343 0011 2 3 1 0 00 -2 -5 -2 1 00 -2 -6 -3 0 11 2 3 1 0 00 -2 -5 -2 1 00 0 -1 -1 -1 11 0 -2 -1 1 00 -2 -5 -2 1 00 0 -1 -1 -1 11 0 -2 -1 1 00 -2 0 3 6 -50 0 1 1 1 -11 0 0 1 3 -20 1 0 -3/2...