Question

solve this question urgently​

Answer 1

Answer:

-22

Step-by-step explanation:

First separate the coordinates like this

i j k

3 1 -2

1 -3 4

first hide the 1st column we get like this

1 -2

-3 4

then do the cross multiply , here use the plus sign

(1×4)-(-3×-2) = 4-6=-2

next hide the second column ie,

3 -2

1 4

do the same step but here use minus sign

-(12-(-2))= -10

last step hide the third column

3 1

1 -3

here use the positive sign

we get

-9-1=-10

add the answer =-22