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The image contains the following matrix-related problem in Spanish:

**2)** "Considere las matrices \( A = \begin{pmatrix} 1 & 2 \\ -1 & 0 \end{pmatrix} \), \( B = \begin{pmatrix} 2 & 0 \\ 0 & 1 \end{pmatrix} \). La matriz \( 2B - A \) es:"

We need to compute the matrix \( 2B - A \).

### Step 1: Double

Considere las matrices A = \begin{pmatrix} 1 & 2 \\ -1 & 0 \end{pmatrix}, B = \begin{pmatrix} 2 & 0 \\ 0 & 1 \end{pmatrix}. La matriz 2B - A es:

Solve the matrix operation 2B - A where A = \begin{pmatrix} 1 & 2 \\ -1 & 0 \end{pmatrix} and B = \begin{pmatrix} 2 & 0 \\ 0 & 1 \end{pmatrix}. Learn how to perform scalar multiplication and matrix subtraction step by step. Suitable for high school students in Grades 9-12.

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