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If roots of the equation x^2-b x+c=0 be two consectutive integers, then b^2-4 c equals

Options

  1. A-2
  2. B3
  3. C2
  4. D1

Correct answer

D. 1

Step-by-step solution

Let , +1 be roots aligned & + +1=b & ( +1)=c & b^2-4 c=(2 +1)^2-4 ( +1)=1 . aligned

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