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The number of positive integral solutions of x^2+9 (x+3)^2 8 x+25 , is

Options

  1. A2
  2. B3
  3. C4
  4. D5

Correct answer

D. 5

Step-by-step solution

We have, array cc & x^2+9 (x+3)^2 8 x+25 & x^2+9 x^2+6 x+9 8 x+25 & x^2+9 x^2+6 x+9 array and x^2+6 x+9 8 x+25 array lr & 6 x 0 and x^2-2 x-16 0 & x 0 and 1- 17 x 1+ 17 & 0 x 1+ 17 & x=1,2,3,4,5 array

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