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AP EAMCET202125 Aug 2021Morning ShiftMathematicsVector AlgebraActual

If P Q + Q R = (2 ^2-5 ) R P then, is equal to

Options

  1. A1
  2. B2
  3. C3
  4. D0

Correct answer

B. 2

Step-by-step solution

aligned & Given, P Q + Q R = (2 ^2-5 ) R P & P R = (2 ^2-5 ) R P & - R P = (2 ^2-5 ) R P & 2 ^2-5=-1 ^2=2 = 2 & aligned

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