For Exercises 19—22, consider the matrix
19. Find the minors.
a. M21 b. M23 c. M32
20. Find the cofactors.
a. A21 b. A23 c. A32
21. Find the minors.
a. M11 b. M22 c. M31
22. Find the cofactors.
a. A11 b. A22 c. A31
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