Mathematics — first biennium · Lesson
A numerical equality compares two expressions without unknowns. An identity is true for every allowed value of the variable. An equation is true only for some values, called solutions.
Are there unknowns? If yes: is the relation always true or only for some values?
In this lesson: Distinguish numerical equality, identity and equation by correctly interpreting the role of the = sign.
You can already assume: Algebraic expressions and the core polynomial path.
Completed exercises: 0/5 · Correct on first attempt: 0
ConceptStep separates what is required from what is recommended or useful as reinforcement. Only required prerequisites block your progress.
Relationships: solid line = required · dashed line = recommended · dotted line = reinforcement.