Evaluate Algebraic Expressions

Objective: Evaluate algebraic expression using substitution and following the order of operations.

​EXPRESSION

​EQUATION

​7 + x

​7 + x = 10

​The variable can be any real number

​The variable is a specific number(s)

Evaluate an Expression: plug in a number for the variable(s) and do the math.

Evaluate: (4n + 6) - 4 for n = 3
Expand:
Plug in:

EXAMPLE

Evaluate: 4(6n - 10) + 5 for n = 3
Expand:
Plug in:

EXAMPLE

Evaluate 2x² + 3x for x = 8
Expand:
Plug in:

EXAMPLE