Question

(a-b) (a+b) +(b-c) (b+c)+(c-a) = ?​

Answer 1

Answer:

answer is 0

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

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

( a^2 - b^2) + (b^2 - c^2) + (c - a)

a^2 - b^2 + b^2 - c^2 + c - a

a^2 - c^2 + c - a

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

(a-c) ( a + c - 1)