21. Q. 20 solve (a-b) (a+b) + (b-c) (b+c) + (c-a) (c+a)
Answers
Answered by
2
Answer:
a2-b2+b2-c2+c2-a2
=0
Answered by
0
Answer:
It's so simple
Step-by-step explanation:
According to properties minus+ plus=always negative (-)
so, your answer is 0
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