Question

(a-b) (a+b) +(b-c) (b+c) +(c-a) (c+a) ​

Answer 1

Answer:

0

Explanation:

1.(a+b)(a-b)+(b-c)(b+c)+(c-a)(c+a)=square a - square of b+square of b- square of c +square of c - square of a=0