sqrt(x+2*sqrt(x-1))+sqrt(x-2*sqrt(x-1))=(x+2*sqrt(x-1))^1/2+(x-2*sqrt(x-1))^1/2=
(x+2*sqrt(x-1)+(x-2*sqrt(x-1))^1/2=sqrt(2x)
sqrt =(выражение)^1/2
sqrt(x+2*sqrt(x-1))+sqrt(x-2*sqrt(x-1))=(x+2*sqrt(x-1))^1/2+(x-2*sqrt(x-1))^1/2=
(x+2*sqrt(x-1)+(x-2*sqrt(x-1))^1/2=sqrt(2x)
sqrt =(выражение)^1/2