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2. Algebra is the use of letters and symbols to
represent values and their relations,
especially for solving equations.
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The combination of each letters and
symbols are called “Algebraic Expressions”.

3. Here are the exponent/
parts of an power/
Expression. degree
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8x² is an example of algebraic expression.
constant or
numerical variable or
coefficient literal
coefficient

4. Constants are symbols representing
exact value like π and numbers. Constants
are always written
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An expression like b, a³ and xy has a
constant of 1.
1 is not written in any expression. If an
expression has no constant, it is understood
the the constant is one.

5. Expression Constant
7b7 7
23x²y 23
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ab4c 1
83f³ 83
m 1

6. Variables are used to represent
unknown values. Variables are often
represented by letters.
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If an expression has no variable,
therefore the expression is exact.

7. Expression Variable
7b7 b
23x²y xy
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ab4c abc
83f³ f
m m

8. Exponents are seen at the top of a
variable. Exponents in an expression can be
like or unlike. They also show how many
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times the variable appears in an expression.
If a variable has no exponent it is
understood that its exponent is one,
therefore there is no need to write one on
the top of a variable.

9. Expression Exponent
7b7 7
23x²y 2, 1
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ab4c 1, 4, 1
83f³ 3
m 1

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