Chapter 4:Algebra, 4.1:Algebraic Expressions

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Last updated 3:39 PM on 9/20/26
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18 Terms

1
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What is an algebraic expression?
A mathematical expression containing numbers
2
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What is a variable?
A letter or symbol that represents an unknown or changing value
3
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What is a term?
A single part of an expression separated by + or −
4
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What is a coefficient?
The number multiplying a variable
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What is a constant?
A number without a variable
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What are like terms?
Terms with exactly the same variables raised to the same powers
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What are unlike terms?
Terms that do not have exactly the same variables and powers
8
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How do you collect like terms?
Combine their coefficients and keep the variable part unchanged
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Can you collect unlike terms?
No
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What is expanding a bracket?
Multiplying the term outside the bracket by every term inside
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What is the distributive law?
Multiplying a factor by every term inside a bracket
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What does x mean when no coefficient is shown?
1x
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What does 2x mean?
2 × x
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What does x × x equal?
x²
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What is the constant in 4x + 9?
9
16
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What is the coefficient of 7x?
7
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What is the coefficient of x?
1
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What is the main way to simplify an algebraic expression?
Expand brackets and collect like terms