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25-05-2018
Mathematics

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if a square + b square + c square minus ab minus bc minus ca equals to zero, prove that A equals to B equal to C

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Аноним Аноним

25-05-2018

a^2 + b^2 + c^2 - ab - bc - ca = 0
a.a + b.b + c.c = a.b + b.c + c.a

equating term by term:-
a = b
b = c
c = a

Therefore a = b = c

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