alleryStart learning →Assuming every variable is non-negative allows which notation to be omitted next to radicals?
AParenthesis pairs
BSubscript labels
CAbsolute value bars
DMultiplication dots
Answer & Solution
Correct answer: C. Absolute value bars
1. The assumption exists to keep the notation clean.
2. Square roots of squares can produce a negative value if the variable is negative.
3. Each variable in a square-root expression represents a non-negative number.
4. Because of that assumption, extra notation is not written next to every radical.
5. The omitted notation is the absolute value bars.
_Source: OpenStax Elementary Algebra 2e (CC BY 4.0), Ch 9 'Roots and Radicals', sections 9.1-9.8_
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