Find the characteristic polynomial of the matrix, using either a cofactor expansion or the special formula for 3x3 determinants. [Note: Finding the characteristic polynomial of a 3x3 matrix is not easy to do with just row operations, because the variable A is involved.] 7 -8 2 1 4 -3 -3

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Find the characteristic polynomial of the matrix, using either a cofactor expansion or the special formula for 3×3 determinants. [Note: Finding the characteristic polynomial of a 3×3 matrix is not easy to do with just row operations, because the variable is involved.] r 024 A 203 430 The characteristic polynomial is (Type an expression using as the variable.)

Find 5A - 2B (Scalar Multiplication & Matrix Subtraction). -2 1 -2 -1 2 4 A = -1 3 B = -2 5 -3 %3D -3 6 -2 3 -1 -2 -8 10 -18 29 -15 22 -15 32 -6 -8 1 -18 29 -15 21 -21 32 -6 -8 1 - 18 29 -25 25 -21 32 -16 - 18 14 -18 -29 -15 21 21 32 -6