初二数学化简求值难题帮帮忙呀
问答/434℃/2025-05-08 00:46:59
优质解答:
应该是(a√a+b√b)/(a-√ab+b),或(a√a-b√b)/(a+√ab+b)吧.
(√a³+√b³)/(a-√ab+b)
=(√a+√b)(a-√ab+b)/(a-√ab+b)
=√a+√b;
(√a³-√b³)/(a+√ab+b)
=(√a-√b)(a+√ab+b)/(a+√ab+b)
=√a-√b.
问答/434℃/2025-05-08 00:46:59
应该是(a√a+b√b)/(a-√ab+b),或(a√a-b√b)/(a+√ab+b)吧.
(√a³+√b³)/(a-√ab+b)
=(√a+√b)(a-√ab+b)/(a-√ab+b)
=√a+√b;
(√a³-√b³)/(a+√ab+b)
=(√a-√b)(a+√ab+b)/(a+√ab+b)
=√a-√b.