Question

d) Show that.
(a - b)(a + b) + (b -c)(b + c) + (c-a)(c + a) = 0
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Answer 1

Step-by-step explanation:

(a²-b²)+(b²-c²) +(c²-a²)

a²-b²+b²-c²+c²-a²

=0

Answer 2

Answer:

that is answer ok

Step-by-step explanation:

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