(a+b)(a-b)+(b+c)(b-c)+(c+a)(c+a) – InterviewSolution

1.

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

Answer»

★Answer♣

0

Step-by-step EXPLANATION:

★using IDENTITY:-

↦ (a+b)(a-b)=a²-b²

So, a²-b²+b²-c²+c²-a²

↦0

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