The distance between a and B is expressed as | ab | = | A-B |. Please find the minimum value of | x + 1 | + | X-2 |

The distance between a and B is expressed as | ab | = | A-B |. Please find the minimum value of | x + 1 | + | X-2 |

|X + 1 | + | X-2 | is the sum of the distance from point x to point (- 1) and the distance to point 2. Obviously, its minimum value is the value when point x is between - 1 and 2, that is, the distance between - 1 and 2, that is, | - 1-2 | = 3