Use the matrices below as needed to complete Problems. 1. Find α12 in matrix A. 2. Find

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Use the matrices below as needed to complete Problems.
4 2 -5 -5 4 -11 3 B= -1 1 -2 -2 -3 2. 2.
-2 E = C= D:

1. Find α12 in matrix A.
2. Find b23 in matrix B.
3. Which of the matrices, if any, are 3 × 4?
4. Which of the matrices, if any, are 2 × 4?
5. Which matrices are square?
6. Write the negative of matrix B.
7. If a matrix is added to its negative, what kind of matrix results?
8. Two matrices can be added if they have the same _____?

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