1.

Two pairs of straight lines with combined equations xy + 4x - 3y - 12 = 0 and xy - 3y + 4y- 12 = 0 form a square . Then the combined equation of its diagonals is

Answer»

`x^(2) - 2X y + y^(2) + x - y = 0`
`x^(2) - 2x y + y^(2) + x + y = 0`
`x^(2) - y^(2) + x - y = 0`
`x^(2) - y^(2) + x + y = 0`

Answer :C


Discussion

No Comment Found

Related InterviewSolutions