Knowledge Base

Solution 11797: Using the Expand() Function on the TI-89 Family, TI-92 Family and Voyage™ 200 Graphing Calculators.

How do I expand expressions on my TI-89 family, TI-92 family or Voyage 200 graphing calculator?

The expand() function on the TI-89 family, TI-92 family and Voyage 200 graphing calculators is the exact opposite function of the factor() function. The expansion is polynomial expansion for polynomials and partial fraction expansion for rational expressions.

The proper syntax for the expand() function is:

expand(expression [,var])

Follow the example provided below to use the expand() function:

Example: Expand (x+y+1)^2

1) From the HOME screen press [F2] for the Algebra menu and select 3:expand(

2) Enter (x+y+1)^2

3) Finally, press [ENTER] and the function will be displayed in its expanded form.

Please see the TI-89 family, TI-92 family and Voyage 200 guidebooks for additional information.