Show that the points A(4,7,-6),B(2,5,-4)...

Show that the points `A(4,7,-6),B(2,5,-4)` and `C(1,4,-3)` are collinear

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The correct Answer is:

`bar(AB)+bar(BC)=2sqrt(3)+sqrtS(3)=3sqrt(3)=bar(CA)` which shows that the given points A,B and C are collinear

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