# Linear algebra problem

1. Jan 27, 2013

### Mdhiggenz

1. The problem statement, all variables and given/known data
The question and my work is in the image it is pretty much to solve for X.
Solve the following matrix equation

Not quite sure how I keep messing this problem up.

2. Relevant equations

3. The attempt at a solution

Last edited: Jan 27, 2013
2. Jan 27, 2013

### Staff: Mentor

The image you posted was too large (1599 pixels x 956 pixels), so I deleted it. Please reformat your image so that it is about 800 x 600.

Also, include the given information, preferably as text in this window.

3. Jan 27, 2013

### Mdhiggenz

Fixed.

4. Jan 27, 2013

### Staff: Mentor

Much better! Thank you.

5. Jan 27, 2013

### Staff: Mentor

It looks like you have a mistake right at the beginning. I'm assuming that you are given A and B.

If so, A - I =
$$\begin{bmatrix} 5 - 1 & 3 \\ 3 & 6 - 1\end{bmatrix} = \begin{bmatrix} 4 & 3 \\ 3 & 5\end{bmatrix}$$