A+2√ab+b÷a-b×a√a-b√b÷a+b+√ab
(a+2√ab+b)/(a-b) * (a√a-b√b)/(a+b+√ab)= =(√a+√b)²*(√*a-√b)(a+√ab+b)/(√a-√b)(√a+√b)*(a+√ab+b)=√a+√b