The image appears to contain a mathematical problem in Indonesian, asking for the inverse of matrix $B$. The matrices provided are:

$A = \begin{pmatrix} 0 & 1 & -2 \\ 3 & 4 & 1 \\ 0 & 2 & 5 \end{pmatrix}, \quad B = \begin{pmatrix} 1 & 4 \\ 3 & 1 \\ 2 & 1 \end{pmatrix}$

The problem specifically asks to find the inverse of matrix $B$.

Let's calculate the inverse of matrix $B$, if it exists. To do that, the matrix must be square (having the same number of rows and columns). However, matrix $B$ is $3 \times 2$, which means it's not square, and therefore, it doesn't have an inverse.

Would you like assistance with a different part of the problem or clarification on another topic related to matrices?

Here are some related questions you might find helpful:

1. What conditions are necessary for a matrix to have an inverse?
2. How do you find the inverse of a square matrix?
3. What is the determinant of a matrix and how does it relate to the inverse?
4. How do you perform matrix multiplication?
5. Can a non-square matrix have a pseudoinverse?

Tip: When working with matrix inverses, always ensure that the matrix is square, as only square matrices can have a true inverse!