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AP EAMCET202022 Sep 2020Morning ShiftMathematicsStraight LinesActual

If the equation 4 x^2+h x y+y^2=0 represent coincident lines, then ' h ' is equal to

Options

  1. A1
  2. B2
  3. C3
  4. D4

Correct answer

D. 4

Step-by-step solution

Since the equation 4 x^2+h x y+y^2=0 represents the coincident lines, then aligned ( h 2 )^2-4 & 1=0 h & =-4,4 aligned Hence, option (4) is correct.

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