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UP TGT Mathematics Co-ordinate Geometry Test Series - Part 5

If the lines ax² + 2hxy + by² = 0 are parallel, then:

Type: MCQ • Marks: 1
If the lines ax² + 2hxy + by² = 0 are parallel, then:
Options
A. h = 0
B. a + b = 0
C. ab = 1
D. h² = ab
Explanation
Coincident or parallel lines through origin require h² = ab.
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