Question

(a²-b²)+(b²-c²)+(c²-a²)

Answer 1

Answer:

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Step-by-step explanation:

Answer 2

Answer:

2(a+b+c)

Step-by-step explanation:

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

=2a+2b+2c

=2(a+b+c)

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