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In this problem, we are given the matrix \( P \) and asked to find the value of \( p_{12} + p_{21} - p_{32} \).

The matrix \( P \) is given as:

\[
P = \begin{pmatrix}
-2 & 1 & 0 \\
3 & 2 & 1 \\
-7 & 6 & 2
\end{pmatrix}
\]

Here, we need to determine the values of the elements at the specified positions:
- \( p_{12} \) is the element in row 1, column 2. From the matrix, \( p_{12} = 1 \).
- \( p_{21} \) is the element in row 2, column 1. From the matrix, \( p_{21} = 3 \).
- \( p_{32} \) is the element in row 3, column 2. From the matrix, \( p_{32} = 6 \).

Now, we calculate the expression \( p_{12} + p_{21} - p_{32} \):

\[
p_{12} + p_{21} - p_{32} = 1 + 3 - 6 = -2
\]

So, the value is \( -2 \).

Would you like more details, or do you have any other questions?

Here are five related questions to expand on this:
1. What are the general properties of matrices, like the determinant and transpose?
2. How do you calculate the determinant of a 3x3 matrix?
3. What is the inverse of a matrix, and when does it exist?
4. Can you describe how matrix multiplication works?
5. How are matrices used in solving systems of linear equations?

**Tip:** When working with matrix indices, always remember that the first number refers to the row and the second to the column.

Diketahui matriks P = [ [-2, 1, 0], [3, 2, 1], [-7, 6, 2] ]. Tentukan nilai dari p12 + p21 - p32.

Learn how to calculate the expression p12 + p21 - p32 for a given matrix. This problem involves basic matrix element identification and arithmetic operations, suitable for students in Grades 9-12.

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