Question

Help with math question precalculus.Given the next matrices, find the result of x+z

Answer 1

We need to find x + z.

Where :

$\begin{gathered} x=\begin{bmatrix}{3} & {8} \\ & \end{bmatrix} \\ \text{and } \\ z=\begin{bmatrix}{-5} & {-7} \\ {-3} & {10}\end{bmatrix} \end{gathered}$

Now, to add up to two matrices both need to have the same number of columns and rows.

In this case, x is a matrix 1x2 and z is a matriz 2x2.

Hence, the sum is not possible.

The correct answer is the first option "not possible"