0.2 Algebraic expressions
Unit 0 · Textbook foundations: equations, lines and systems
Ideas in this lesson
Order of operations
Evaluate grouped terms and powers before multiplication and addition.
Distribute and combine like terms
Distribute to every term, then combine like variable terms and constants.
Equivalent-expression coefficients
Equivalent expressions have matching coefficients for every input.
Translate a multivariable expression
Attach each unit price to its quantity, then include the fixed fee.
Interpret terms in context
A coefficient gives the rate per item; a constant is independent of the quantities.
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