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Finding the Sum and Difference of Two 3 x 3 Matrices

Avg difficulty 2.5

Given A A and B: B :

  1. ⓐFind the sum.
  2. ⓑFind the difference.
A=[ 2 −10 −2 14 12 10 4 −2 2 ]and B=[ 6 10 −2 0 −12 −4 −5 2 −2 ] A = \begin{bmatrix} 2 & −10 & −2 \\ 14 & 12 & 10 \\ 4 & −2 & 2 \end{bmatrix} \text{and}\textrm{ } B = \begin{bmatrix} 6 & 10 & −2 \\ 0 & −12 & −4 \\ −5 & 2 & −2 \end{bmatrix}

OpenStax Algebra and Trigonometry 2e, 11.5 Matrices and Matrix Operations, exercise 13

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Adapted from College Algebra © 2021 Rice University. Licensed under CC BY 4.0. Sources: College Algebra 2e, Algebra and Trigonometry 2e, Precalculus 2e, College Algebra with Corequisite Support 2e. Imported at revision 4922e46.