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If c^(2) ne ab and the roots of (c^(2)-a...

If `c^(2) ne ab` and the roots of `(c^(2)-ab)x^(2)-2(a^(2)-bc)x+(b^(2)-ac)=0` are equal, then show that `a^(3)+b^(3)+c^(3)=3abc" or "a=0`

A

`a^3 +b^3+c^3= 3 abc or a=0`

B

`a^2 + b^2 + c^2 = ab + bc + ca`

C

` abc = a+b +C`

D

`a=b=c`

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A
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