(a+2根号ab+b)/(a-b) 减去 {[根号a/(a+根号ab)减去 根号b/(b-根号ab)]}除以根号a/(b+根号ab)
问题描述:
(a+2根号ab+b)/(a-b) 减去 {[根号a/(a+根号ab)减去 根号b/(b-根号ab)]}除以根号a/(b+根号ab)
答
(a+2根号ab+b)/(a-b) 减去 {[根号a/(a+根号ab)减去 根号b/(b-根号ab)]}除以根号a/(b+根号ab)=(√a+√b)^2/(a-b)- {[√a/(a+√ab)- √b/(b-√ab)]}/√a/(b+√ab)=(√a+√b)^2/(a-b)- {[√a(b-√ab)-(a...