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NDA2016MathematicsQuadratic EquationActual

Given that and are the roots of the equation x ^2+ bx + c =0 with b 0 . What is ( + ) equal to?

Options

  1. Ab
  2. B–b
  3. Cc
  4. D–c

Correct answer

B. –b

Step-by-step solution

aligned & ( + ) & = + & = + & =-b aligned

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