1.

If a, b, c are in A.P., a, x, b are in G.P. and b, y, c are in G.P. the point (x, y) lies on

Answer»

`x^(2)+y^(2)=2B^(2)`
`x^(2)-y^(2)=2b^(2)`
`x^(2)-y^(2)=3b^(2)`
`x^(2)+y^(2)=3b^(2)`

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