alleryWhy are subscripts such as x1, x2 and x3 added to a letter?
ATo show repeated powers
BTo tell the variables apart
CTo show a multiplication
DTo mark fixed constants
Answer & Solution
Correct answer: B. To tell the variables apart
1. Sometimes many variables are needed.
2. Subscripts give each one a separate label.
3. Powers are shown by exponents, not subscripts.
_Source: Wikipedia, Algebra, Elementary algebra_
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