If the lines x+2y+3=0,x+2y−7=0 and 2x−y−4=0 are the sides of a square, then equation of the remaining sides of the square can be
A
2x−y+6=0
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B
2x−y+8=0
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C
2x−y−10=0
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D
2x−y−14=0
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Solution
The correct options are A2x−y+6=0 D2x−y−14=0 Given eq of lines of sides of square are
x+2y+3=0
x+2y−7=0 and 2x−y−4=0
Here since the first two lines are parallel as they have same slope and distance between them is |3−(−x)| i.e, 10 hence the fourth Eqnof the line to form a square would be a line with slope 2 and at a distance 10 from the third line