If a/(b c)-2=sqrt(b/c)+sqrt(c/b), where ...

If `a/(b c)-2=sqrt(b/c)+sqrt(c/b),` where `a , b , c >0,` then the family of lines `sqrt(a)x+sqrt(b)y+sqrt(c)=0` passes though the fixed point given by `(1,1)` (b) `(1,-2)` `(-1,2)` (d) `(-1,1)`

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