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KVPY2014MathematicsParabola

Suppose a parabola y=a x²+b x+c has two x intercepts one positive and one negative, and its vertex is (2,2) . Then which of the following is true

Options

  1. Aa b>0
  2. Bb c>0
  3. Cca >0
  4. Da+b+c>0

Correct answer

B. b c>0

Step-by-step solution

y=a x 2+b x+ca>0, b

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