Question

Решите кто задание 2.1

Answer 1

$frac{1}{ sqrt{ sqrt{23} +4} -1} -frac{1}{sqrt{ sqrt{23} +4} +1} = frac{(sqrt{ sqrt{23} +4} +1)-(sqrt{ sqrt{23} +4} -1)}{(sqrt{ sqrt{23} +4} -1)(sqrt{ sqrt{23} +4} +1)} = \ \ = frac{sqrt{ sqrt{23} +4} +1-sqrt{ sqrt{23} +4} +1}{ sqrt{23} +4-1}= frac{2}{ sqrt{23} +3 }$