$(69 + 28 \sqrt{5})$ के धनात्मक वर्गमूल का मान क्या है?

  • A
    $7 + 2 \sqrt{5}$
  • B
    $7 - 2 \sqrt{5}$
  • C
    $2 + 7 \sqrt{5}$
  • D
    $2 - 7 \sqrt{5}$

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