Wyzant
Wyzant: Evaluating Expressions Calculator
Need assistance in evaluating a polynomial expression if you're given the values of all the variables? This "Calculator," from WyzAnt asks you to input the expression and the known values to be substituted in, and then displays the final...
Wyzant
Wyzant: Substitution
This tutorial from WyzAnt reviews how to evaluate expressions that contain exponents. An interactive calculator is provided to help students practice.