初二数学化简求值难题帮帮忙呀
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/12 08:12:33
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初二数学化简求值难题帮帮忙呀
初二数学化简求值难题
帮帮忙呀
初二数学化简求值难题帮帮忙呀
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.