I am working on one exercise problem for my own good to understand before i take a quiz. Will anyone show me step by step how to do this? Thanks for all your help, I just got to learn this for my own good thanks.

Question

anonymous · Answer

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anonymous · Answer

@iPwnBunnies can u show me? or kno anyone who can show me

ipwnbunnies · Answer

Sorry, I'm not familiar with doing operations with matrices.

anonymous · Answer

u kno anyone who can help?

hero · Answer

$$\begin{bmatrix} -5 & 1 \ 0 & 8 \end{bmatrix}-\begin{bmatrix} 7 & -6 \ -4 & 2 \end{bmatrix}=\begin{bmatrix} -5-7 & 1-(-6) \ 0-(-4) & 8-2 \end{bmatrix}$$

anonymous · Answer

When you add or subtract matrices you just add or subtract the corresponding entries in the matrices. In this example, you would subtract the upper left corner element in the second matrix from the upper left corner element in the first matrix.

hero · Answer

And in general:

$$\begin{bmatrix} a & b \ c & d \end{bmatrix}-\begin{bmatrix} e & f \ g & h \end{bmatrix}=\begin{bmatrix} a\quad -\quad e & b\quad -\quad f \ c\quad -\quad g & d\quad -\quad h \end{bmatrix}$$