1.

If a point P moves such that the sum of the distance from P to the point A(1, -1) and B(-1, 1) is always 4, then the equation for the locus of P is

Answer»

`16X^(2)-64x+7y^(2)=48`
`3x^(2)+2xy+3y^(2)=8`
6x + 4Y = 3
`x^(2)+y^(2)-8x+6y=0`

Answer :B


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