Question

Simplify: (a + b)(a - b) +(b+c)(b -c)+(c + a)(c-a)​

Answer 1

Answer:

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

a² - b² + b² - c² + c² - a²

0

Step-by-step explanation:

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Answer 2

Answer:

(a+b)(a-b)+(b+c)(b-c)+(c+a)(c-a)=a²-b²+b²-c²+c²-a²

{®(x+y)(x-y)=x²-y²}

=0

(a+b)(a-b)+(b+c)(b-c)+(c+a)(c-a)=0