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KVPY2010MathematicsQuadratic Equation

The number of roots of the equation ⁷ - ⁴ =1 that lie in the interval [0,2 ] is-

Options

  1. A2
  2. B3
  3. C4
  4. D8

Correct answer

A. 2

Step-by-step solution

⁷ =1+ ⁴ 1 but ⁷ 1 , so =1 ; =0 =0,2

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