keyaramandujano5017 keyaramandujano5017 25-05-2023 Mathematics contestada how? thank you 6. (10 points) For compute 1 2 3 1 3 7 A = 248 (a11 + 7a21) C11 + (a12 + 7a22)C12 + (a13 + 7a23)C13.