(1 point) (a) Find the inverse of the matrix A-1 = 0 -2 1 A =...

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(1 point) (a) Find the inverse of the matrix A-1 = 0 -2 1 A = -1 -5 21 A X2 13 -3 -1 0 3 14 28 -3 -6 (b) Use the answer from part (a) to solve the linear system - -14 -21 + 3x₂ + 7x3 = -5x₁ + 14x2 + 28x3 X1 - 3x2 -7 -3+3x2+7x3 1 = 6x3 = 3 -5 2 (1 point) Give an example of two 3 x 3 matrices A and B such that AB + BA. A B || - 1 4 7 4 7 2 5 CO 8 2 50 8 3 6 9 3 6 9 (1 point) (a) Find the inverse of the matrix A-1 = 0 -2 1 A = -1 -5 21 A X2 13 -3 -1 0 3 14 28 -3 -6 (b) Use the answer from part (a) to solve the linear system - -14 -21 + 3x₂ + 7x3 = -5x₁ + 14x2 + 28x3 X1 - 3x2 -7 -3+3x2+7x3 1 = 6x3 = 3 -5 2 (1 point) Give an example of two 3 x 3 matrices A and B such that AB + BA. A B || - 1 4 7 4 7 2 5 CO 8 2 50 8 3 6 9 3 6 9