{|3m-m|/√2}^2+(√7)^2=(3m)^2 怎么算

发布时间:2021-02-26 19:05:25

{|3m-m|/√2}^2+(√7)^2=(3m)^2 怎么算

网友回答

{|3m-m|/√2}^2+(√7)^2=(3m)^2
(2m)^2/2+7=9m^2
2m^2+7=9m^2
7m^2=7
m^2=1m=±1
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