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The diagonals of a square are along the pair of lines whose equation is `2x^2 - 3xy - 2y^2 = 0`If (2,1) is a vertex of the square, then the vertex of the square adjacent to it may be

A

(1,4)

B

(1,-2)

C

(2,-1)

D

(1,2)

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The correct Answer is:
B
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MARVEL PUBLICATION-PAIR OF STRAIGHT LINES-TEST YOUR GRASP
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