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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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