# Math Help - Matrix Algebra

1. ## Matrix Algebra

A question says:

given than m = [insert matrix here],

show that M^2-M+10I = 0, where I and 0 are the 2x2 unit and null matrices respectively.

What does '2x2 unit and null matrices' mean?

2. Originally Posted by juliak
A question says:

given than m = [insert matrix here],

show that M^2-M+10I = 0, where I and 0 are the 2x2 unit and null matrices respectively.

What does '2x2 unit and null matrices' mean?
You must have met these: $I = \left( \begin{array}{cc}
1 & 0 \\
0 & 1 \end{array}
\right)$
and $0 = \left( \begin{array}{cc}
0 & 0 \\
0 & 0 \end{array}
\right)$