a=4+√3,b=4-√3,a+b=8,a-b=2√3a/(a-根ab)-根b/(根a+根b)=(√a)^2/[(√a)^2-√a√b]-√b(√a-√b)/(√a+√b)(√a-√b)=√a/(√a-√b)-(√ab-b)/(a-b)=√a(√a+√b)/(√a+√b)(√a-√b)-(√ab-b)/(a-b)=(a+√ab)/(a-...