谢谢你对我们团的信任.∵ 【a-b+（a-b分之4ab）】【a+b-（a+b分之4ab)] =[(a-b)²+4ab]/(a-b)X[(a+b)²-4ab]/(a+b) =(a+b)²/(a-b)X (a-b)²/(a+b) =(a+b)(a-b)当a=2+√6,b＝2-√6...