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The lines x+2y+3=0,x+2y-7=0,a n d2x-y-4=...

The lines `x+2y+3=0,x+2y-7=0,a n d2x-y-4=0` are the sides of a square. The equation of the remaining side of the square can be (a) `2x-y+6=0` (b) `2x-y+8=0` (c) `2x-y-10=0` (d) `2x-y-14=0`

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The lines x+2y+3=0,x+2y-7=0,a n d2x-y-4=0 are the sides of a square. The equation of the remaining side of the square can be 2x-y+6=0 (b) 2x-y+8=0 2x-y-10=0 (b) 2x-y-14=0

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Which of the following line can be normal to parabola y^2=12 x ? (a) x+y-9=0 (b) 2x-y-32=0 (c) 2x+y-36=0 (d) 3x-y-72=0

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x=2, y=−1 is a solution of the linear equation (a) x+2y=0 (b) x+2y=4 (c) 2x+y=0 (d) 2x+y=5

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The equation of common tangent to the curves y^2 =4x and xy=2 is (A) x+2y-4=0 (B) x+2y+4=0 (C) x-2y+4=0 (D) x-2y-4=0

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Which of the following line can be tangent to the parabola y^2=8x ? (a) x-y+2=0 (b) 9x-3y+2=0 (c) x+2y+8=0 (d) x+3y+12=0

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