Help!!!!! Be sure answer all in order

Given the following, 9 -3 WAN 8 A = -1 a22 3 X1 = 21 = -2, X2 = X3 3 -3 0 a33 A. Find the values of a11, a22, and a23 such that X, is an eigenvector of matrix A and 1, is the corresponding eigenvalues. B. Given the other 2 eigenvectors, x, and x2, find the remaining two eigenvalues, 1, and 12, of A. C. Based on your answers from part A and part B, state why matrix A is diagonalizable. D. Write down the matrix of eigenvectors X = [x1, *2, x3] and the diagonalization matrix A