pls help me for thsi homwwork

its four different online hw

(1 point) Find all possible values of a, if any, for which the matrix 7 3 0 A: 3 7 0 0 0 a is not diagonalizable. If there are no such values, write none. a: \f1 (1 point) Suppose that a 2 x 2 matrix A has an eigenvalue 2 with corresponding eigenvector [ 2 ] and an 2 eigenvalue 1 with corresponding eigenvector [ 3 ]. Find an invertible matrix P and a diagonal matrix D so that A = PDP' 1. Enter your answer as an equation of the form A = PDP' 1. You must enter a number in every answer blank for the answer evaluator to work properly. (1 point) The matrix 2 0 0 C = 1 2 0 2 2 1 has two distinct eigenvalues with '11