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MHT CET202013 Oct 2020Evening ShiftMathematicsPair of LinesActual

If the equation a x²+h x y+b y²=0 represents a pair of coincident lines, then

Options

  1. Ah²=2 a b
  2. Bh²=4 a b
  3. Ch²=8 a b
  4. Dh²=a b

Correct answer

B. h²=4 a b

Step-by-step solution

This is by definition.

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