01:29
Practical Problem: Finding the Amount of Electrical Current
Evaluating a rational expression to find out why a fuse keeps blowing out. Using the formula to find the total resistance of a parallel circuit.
01:25
Evaluating a Rational Expression
The method of substituting a value for the variables in a rational expression is called evaluating an expression.
01:15
Evaluating a Rational Expression in which m = 4 Compared with the Same Expression in which m = -4
Comparison of the results of evaluating an expression in which the variable is substituted with 4 and then with -4.