Question

Find the value of variables.
[-12 -w^2] = [2k -81]
[2f 3] [-14 3]

Answer 1

@iGreen

Answer 2

these are 2 matrics

Answer 3

so when we compare or equate 2 matrices we equate their corresponding element

Answer 4

-12=2k

Answer 5

divide both side by 2
k=-6

Answer 6

so equate similarly equate the element at same places

Answer 7

So
-12=2k
k= -6
-w^2=-81(dun know)
2f=-14
f=-7
3=3 =0