Hello Tutor, please help me with these problems. Please write neatly, follow the instructions and ONLY SOLVE THE "CIRCLE" ONES. Thank you so much for your help. I will really appriciate your help and I would leave a good feedback and a thumbs up?

\fIn Exercises 5-18, find the eigenvalues, and if necessary the corresponding eigenvectors, of A and determine whether A is diagonalizable.In Exercises 19-26, diagonalize the matrix A. 2 19. A = -1 20. A = 1 2 NNO 21. A = 0 1- 0 OO 23, A = -1 1 0 0 24. A = 0 0 0 -1 1 O 25. A = - -OO 0 O2 2 0 11. A = 2 2 2 0 0 3 -1 3 2 12. A = -1 2 3 -1 2 3 2 13. A = 2 -1 - 1 2