I Need Help With Following Question I Would Like To Use Rank Theorem To Show That Nullspace Of Matrix Ramnda*I

(a) Show that the matrix
2 1 0
0 2 0
0 0 2 is not diagonalizable by comparing the algebraic and geometric multiplicities of
its (one) eigenvalue. (b) Using the idea in (a), construct a 9 x 9 matrix with eigenvalues as shown. geometric algebraic A mult. mult.
1 3 3
2 2 3
3 1 3 Math