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linear algebra - Why can all invertible matrices be row reduced to the identity matrix? - Mathematics Stack Exchange
![linear algebra - Why can all invertible matrices be row reduced to the identity matrix? - Mathematics Stack Exchange linear algebra - Why can all invertible matrices be row reduced to the identity matrix? - Mathematics Stack Exchange](https://i.stack.imgur.com/tPcoh.png)
linear algebra - Why can all invertible matrices be row reduced to the identity matrix? - Mathematics Stack Exchange
![If A = begin{bmatrix}1 &lambda & 2 1 & 2 & 5 2 & 1 & 1end{bmatrix} is not invertible then lambda = ? If A = begin{bmatrix}1 &lambda & 2 1 & 2 & 5 2 & 1 & 1end{bmatrix} is not invertible then lambda = ?](https://haygot.s3.amazonaws.com/questions/1552583_1705785_ans_c72af12dc7be40c0960490bcb4adb235.jpg)
If A = begin{bmatrix}1 &lambda & 2 1 & 2 & 5 2 & 1 & 1end{bmatrix} is not invertible then lambda = ?
![linear algebra - Classifing the (square) real matrices by invertibilty and diagonalizability - Mathematics Stack Exchange linear algebra - Classifing the (square) real matrices by invertibilty and diagonalizability - Mathematics Stack Exchange](https://i.stack.imgur.com/BTqZM.png)