My question on a worksheet im doing

https://drive. google. com/file/d/10uAtD1Np9dwF_f7a8Vv_nbc 7RwhKrd7n/view?usp=sharing

this is the back side

https://drive. google. com/file/d/11tghCYdA6ZhbDfQa-nwl1Jo DFyUI2ahA/view?usp=sharing

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

step-by-step explanation:

answer: 0

step-by-step explanation: the positive, like 5, + its opposite, like -5 would be 0

5+(-5)=0, or 5-5=0