(x-a) (x-b) +(x-b) (x-c) +(x-c) (x-a) =0
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Step-by-step explanation:
(x-a) (x-b) +(x-b) (x-c) + (x-c) (x-a)
=. (x square-xb-ax+ab) + (x square-cx-bx+BC) +
_ (X square-ax-cx+ac)
= 3x square-bx-2ax-2cx+ab+BC+ac
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