x=(a+b)/(2sqrt(ab))
x^2=(a+b)^2/4ab
2bsqrt(x^2-1)=2bsqrt((a-b)^2/4ab)=(a-b)/sqrt(a/b)
x-sqrt(x^2-1)=((2b кор(x^2-1))/(x-кор(x^2-1)) a+b)/(2sqrt(ab))-(a-b)/2sqrt(ab)=2b/2sqrt(ab)=1/sqrt(a/b)
[(a-b)/sqrt(a/b)]/[1/sqrt(a/b)]=a-b
x=(a+b)/(2sqrt(ab))
x^2=(a+b)^2/4ab
2bsqrt(x^2-1)=2bsqrt((a-b)^2/4ab)=(a-b)/sqrt(a/b)
x-sqrt(x^2-1)=((2b кор(x^2-1))/(x-кор(x^2-1)) a+b)/(2sqrt(ab))-(a-b)/2sqrt(ab)=2b/2sqrt(ab)=1/sqrt(a/b)
[(a-b)/sqrt(a/b)]/[1/sqrt(a/b)]=a-b