allerySince distance can never be negative, the distance formula takes:
ANeither of the roots
BOnly the positive root
COnly the negative root
DBoth roots equally
Answer & Solution
Correct answer: B. Only the positive root
1. A square root has two signs.
2. A length cannot be below zero.
3. Only the positive square root is used.
_Source: syllabus Mathematics, Chapter 7, Coordinate Geometry._
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