Using properties of determinants prove that:
Taking (b-a) common from C1, C3
Operating R2→R2-R1+R3
[Properties of determinants say that if 1 row or column has only 0 as its elements, the value of the determinant is 0]
= 0
Hence Proved
1
Using properties of determinants prove that:
Taking (b-a) common from C1, C3
Operating R2→R2-R1+R3
[Properties of determinants say that if 1 row or column has only 0 as its elements, the value of the determinant is 0]
= 0
Hence Proved