Mathematical problem point AB represents rational number on the number axis respectively. The distance between two points ab and AB is expressed as |AB. The point AB represents the rational number on the number axis respectively. The distance between the two points of ab and AB is expressed as |AB|. When there is an origin in the two points of A~B, you set A at the origin,|AB|=||OB|=|b|=|a-b|; when the two points A and B are not at the origin, the points A and B are on the right of the origin,|AB|=|OB|-|OA|=|b|-|a|=b-a=|a-b|Point A, B is on the left of the origin,|AB|=|OB|-|OA|=|b|-|a|=-b-(-a)=|a-b|Point AB is on both sides of the origin, |AB|=|OB OA|=|b a|=a+(-bar)=|a-b |…… ……… ……… ……… ……… ……… ……… ……… ……… ... The distance between two points A.B on the number axis representing x and -1 is—if |AB |=2, then x is—

Mathematical problem point AB represents rational number on the number axis respectively. The distance between two points ab and AB is expressed as |AB. The point AB represents the rational number on the number axis respectively. The distance between the two points of ab and AB is expressed as |AB|. When there is an origin in the two points of A~B, you set A at the origin,|AB|=||OB|=|b|=|a-b|; when the two points A and B are not at the origin, the points A and B are on the right of the origin,|AB|=|OB|-|OA|=|b|-|a|=b-a=|a-b|Point A, B is on the left of the origin,|AB|=|OB|-|OA|=|b|-|a|=-b-(-a)=|a-b|Point AB is on both sides of the origin, |AB|=|OB OA|=|b a|=a+(-bar)=|a-b |…… ……… ……… ……… ……… ……… ……… ……… ……… ... The distance between two points A.B on the number axis representing x and -1 is—if |AB |=2, then x is—

-3 Or 1

A, b are rational numbers, and |a+b|=a-b.

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