Why does the distance formula need no absolute values?
ASquares are positive
BSigns are positive
CSums are positive
DSlopes are positive
Answer & Solution
Correct answer: A. Squares are positive
1. The formula squares each difference.
2. Squaring removes any negative sign.
3. We do not need absolute value symbols because any number squared is positive.
4. So the answer is squares are positive.
_Source: OpenStax 'Algebra and Trigonometry 2e', 2.1 'The Rectangular Coordinate Systems and Graphs'_
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