Question

Add the matrices.

What number fills in [?] ?
B
A
4
2
9 -4
3 -2 8
ܚ ܝܪ ܚ
-1
A + B =
25
9 -8
-1 5
596
1 [?]
3
4
82
4
7
-4
Entor

Answer 1

3

Explanation:

A + B is calculated by adding the same positions in both matrices.

and position (2, 3) in A+B is therefore the sum of position (2, 3) in A plus the position (2, 3) in B, which is then

-4 + 7 = 3