已知根号x=根号a-(1/根号a),求（x+2+根号4x+x^2)/(x+2-根号4x+x^2)的值

已知根号x=根号a-(1/根号a),求（x+2+根号4x+x^2)/(x+2-根号4x+x^2)的值已知√x=√a-(1/√a),求（x+2+√4x+x^2)/(x+2-√4x+x^2)的值