18 videos in "Evaluating Expressions"
-
Expressions & Formulas
-
Variables, Expressions, and Equations
-
Addition and Subtraction
-
Multiplication and Division
-
Operations and Expressions
-
Evaluating mathematical expressions
-
Evaluating an expression
-
Evaluating Expressions with Three Variables
-
Evaluate Expression for Two Variables
-
What is an Algebraic Expression
-
What is a Variable
-
Equivalent Expressions
-
Simplifying Expressions with Addition and Subtraction
-
Simplifying Expressions with Subtraction and Multiplication
-
Simplifying Expressions with Division
-
Simplifying Expressions with Division
-
Simplify Numerator and Denominator of Expressions
-
Simplifying Basic Expressions
Variables, Expressions, and Equations
Variables, Expressions, and Equations
15838 views, 4 ratings - 00:08:17
Created by and copyright of Larry Perez. Funded by the state of California through Saddleback College. More information on videos, resources, and lessons at Algebra2Go.
(
download video
)
Learn to evaluate expressions given values of a variable. Also, learn to determine whether a value is a solution to an equation.
- What is a variable?
- How do you work with variables in expressions and equations?
- What is an expression and how do you evaluate an expression?
- How do you evaluate the expression x + 5 if x = 4?
- How do you evaluate the expression 2x - 9 if x = 4?
- How do you evaluate the expression 3x^2 - 17 if x = 4?
- What is x + y if x = 3 and y = -1?
- How do you evaluate 2x - y if x = 3 and y = -1?
- What does (3x - y^2)/(2xy) equal if x = 3 and y = -1?
- Is x = 5 a solution to x + 2 = 6?
- Is x = 5 a solution to 2x + 2 = x^2 - 13?
This lesson will walk you though the idea of replacing a variable with a value in an expression and then evaluating the value of the expression. All terminology is defined and all steps are explained as you go through some example problems. Determining if values of a variable are solutions to equations or not.
