Question
Show that:
Solution
Applying
to 
and dividing by x y z , we get
Taking common factors, x y, z, from 
respectively, we get
Again
we get
Taking common factor (x + y + z) from
, we have
Applying
Applying
we get
[Expanding by first row]
respectively, we getAgain
we getTaking common factor (x + y + z) from
, we haveApplying
Applying
we get[Expanding by first row]
