Answers

2016-04-17T13:46:57+05:30
(x-a) (x-b) (x-c) (x-d) ( x-e) ...................(x-w) (x-x) (x- y) (x- z)
= (x-a) (x-b) (x-c) ................(x-w) ×0 ×(x-y) (x-z)
=0
because any number muliply by zero will equal to 0 and the term (x-x) = 0
0