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Railways PYQCBT 2 2017

RRB NTPC · Question 21

Simplify : 1 ÷ [{p^2/(p + 6)} + {6p/(p + 6)}]

  1. 1/p

  2. \(\frac{1}{{\left( {p + 6} \right)}}\)

  3. p + 6

  4. p

Show answer & explanation

Answer: (A) 1/p

Explanation

p²/(p + 6) + 6p/(p + 6) = (p² + 6p)/(p + 6) = p(p + 6)/(p + 6) = p. So 1 ÷ p = 1/p.