Here's the question you clicked on:
mathTalk
What is an indempotent matrix ? What is an indempotent matrix ? @Mathematics
the degree of the minimum polynomial satisfied by a nonscalar 9 by 8 matrix M is ?
8 by 8 impotent * i'm sorry
From a quick Google search, an idempotent matrix is a matrix that when multiplied by itself, you get the same matrix again. Example: MM = M Sorry if that doesn't help. :/ lol.