通分:2mn/4m²-9与2m-3/2m+3
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/16 01:14:25
通分:2mn/4m²-9与2m-3/2m+3
2mn/4m²-9
=2mn/(2m-3)(2m+3)
2m-3/2m+3
=(2m-3)²/(2m-3)(2m+3)
2mn÷(4m²-9)=2mn/[(2m+3)(2m-3)],
(2m-3)(2m+3)=(2m-3)^2*(2m+3)^2/[(2m+3)(2m-3)].
收录互联网各类作业题目,免费共享学生作业习题
慧海网手机作业共收录了 千万级 学生作业题目
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/16 01:14:25
通分:2mn/4m²-9与2m-3/2m+3
2mn/4m²-9
=2mn/(2m-3)(2m+3)
2m-3/2m+3
=(2m-3)²/(2m-3)(2m+3)
2mn÷(4m²-9)=2mn/[(2m+3)(2m-3)],
(2m-3)(2m+3)=(2m-3)^2*(2m+3)^2/[(2m+3)(2m-3)].