Question

21. Q. 20 solve (a-b) (a+b) + (b-c) (b+c) + (c-a) (c+a)​

Answer 1

Answer:

a2-b2+b2-c2+c2-a2

=0

Answer 2

Answer:

It's so simple

Step-by-step explanation:

According to properties minus+ plus=always negative (-)

so, your answer is 0