SOLVED: Find the characteristic polynomial of the matrix , using either cofactor expansion r the special formula for 3 x 3 determinants [Note: Finding the characteristic polynomial of a 3 x3 matrix is not easy to do with just ToW operations, because the variable A is involved ]-2-9The characteristic polynomial is (Type an expression using as the variable

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SOLVED:Exercises 9-14 require techniques from Section 3.1 . Find the characteristic polynomial of each matrix, using either a cofactor expansion or the special formula for 3 ×3 determinants described prior to Exercises 15-18 in Section 3.1 . INote: Finding the characteristic polynomial of a 3 ×3 matrix is not easy to do with just row operations, because the variable λis involved. [ 1 0 -1 2 3 -1 0 6 0]