Question

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

Answer 1

Step-by-step explanation:

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

=> a² - b² + b² - c² + c² - a²

=> 0

[ Identity used (x + y)(x - y) = x² - y² ]