5.5
Polynomials in Several Variables
Homework: Odds 1-9, Odds 23-29, Odds 33-45
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Evaluating: Substitute given values for each of the variables and compute.
Example: Evaluate the following polynomial for x = -3 and y = 2.
You may want to use your calculator to enter the calculations as follows:
or you can store the value –3 for X and the value 2
for Y using 
as
shown below.
We see that the polynomial evaluated for x = -3 and y
= 2 is equal to 13,334.
Adding, Subtracting, and Multiplying: These
processes are the same as for polynomials with one variable.
Example: Add the following polynomials.
Example: Subtract the following
polynomials.
Example: Multiply the following polynomials.
Example: Multiply the following polynomials.
