Question

using properties of determinant prove that​

Answer 1

Answer:

put a=1,b=1,c=1

=> L. H. S = | 1. 0. 0 |

| 0. 1. 0|

| 0. 0. 1 |

= 1(1-0) = 1

=> R. H. S = (a+b-c) *(b+c-a)*(c+a-b)

=> R. H. S = (2-1)*(2-1)*(2-1)

=> R. H. S = 1

L. H. S = R. H. S

Answer 2

Refer to the attachment!!