- #1

- 3

- 0

## Homework Statement

Using the following information, find the matrix A

(I+2A)

^{-1}=

[-1 2]

[4 5]

## Homework Equations

AA

^{-1}= I

## The Attempt at a Solution

none. I have no idea how should I start. The inverse on the whole left side is driving me crazy.