AB = √(x2 - x1)² + (y2 - y1)² + (z2 - z1)²
AB = √(1+1)²+(-1-0)²+(1+1)² = √4+1+4 = √9 = 3
Ответ: 3
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AB = √(x2 - x1)² + (y2 - y1)² + (z2 - z1)²
AB = √(1+1)²+(-1-0)²+(1+1)² = √4+1+4 = √9 = 3
Ответ: 3