If and find the value of A + B + C

Engineering

Mathematics

Multiplication of Matrices

Symmetric and Skew Symmetric Matrices

Question

If $A = [\begin{array}{cc} 2 & - 1 \\ 3 & 4 \end{array}] B = [\begin{array}{cc} 5 & - 2 \\ 7 & 4 \end{array}]$ and $C = [\begin{array}{cc} 2 & 5 \\ - 3 & - 8 \end{array}]$ find the value of A + B + C

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A + B + C = [\begin{array}{cc} 2 & - 1 \\ 3 & 4 \end{array}] + [\begin{array}{cc} 5 & - 2 \\ 7 & 4 \end{array}] + [\begin{array}{cc} 2 & 5 \\ - 3 & - 8 \end{array}]

= [\begin{array}{cc} 2 + 5 + 2 & - 1 - 2 + 5 \\ 3 + 7 - 3 & 4 + 4 - 8 \end{array}]

= [\begin{array}{cc} 9 & 2 \\ 7 & 0 \end{array}]

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