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.
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.