关于二次根式的基本性质,不理解/.很迷茫 .(1)(√a)^2=a(a≥0);(2)√(a^2)=|a|=a(a≥0)=-a(a
来源:学生作业帮助网 编辑:作业帮 时间:2024/08/13 18:02:52
![关于二次根式的基本性质,不理解/.很迷茫 .(1)(√a)^2=a(a≥0);(2)√(a^2)=|a|=a(a≥0)=-a(a](/uploads/image/z/13942307-11-7.jpg?t=%E5%85%B3%E4%BA%8E%E4%BA%8C%E6%AC%A1%E6%A0%B9%E5%BC%8F%E7%9A%84%E5%9F%BA%E6%9C%AC%E6%80%A7%E8%B4%A8%2C%E4%B8%8D%E7%90%86%E8%A7%A3%2F.%E5%BE%88%E8%BF%B7%E8%8C%AB+.%EF%BC%881%29%28%E2%88%9Aa%29%5E2%3Da%28a%E2%89%A50%29%3B%282%29%E2%88%9A%28a%5E2%29%3D%7Ca%7C%3Da%28a%E2%89%A50%29%3D-a%28a)
xŐJ@F_eƤfkȋ.ZjCBk+J[J#MXߥW}gƍ|3|w,a-rVEfМtiv/|1:[c)z{ Mhd5tH2Md7H7::1,V.u~
ϱae~gR
4J{6v_0Ma[1OBŒ,W/&ǮşK9L0bt8ȱ~g
关于二次根式的基本性质,不理解/.很迷茫 .(1)(√a)^2=a(a≥0);(2)√(a^2)=|a|=a(a≥0)=-a(a
关于二次根式的基本性质,不理解/.很迷茫 .
(1)(√a)^2=a(a≥0);
(2)√(a^2)=|a|=a(a≥0)
=-a(a
关于二次根式的基本性质,不理解/.很迷茫 .(1)(√a)^2=a(a≥0);(2)√(a^2)=|a|=a(a≥0)=-a(a
能在根号下的,绝对是正数,所以(1)是直接等于A,(2)中由于是A的平方,A不知道正负,所以要分情况.