The roots of $(x - 1)^2$ counted with multiplicity

Example · High school

Terms

Term	This example	Why
multiset	✓	The roots of $(x - 1)^2$ counted with multiplicity form a multiset, in which the root $1$ appears twice.
set	✗	The roots of $(x - 1)^2$ counted with multiplicity does not form a set, which cannot count an element twice.

Distinctions using this example

• Types of collections

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