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HOW TO EXPAND EXPRESSIONS WITH TI89 CALCULATOR

 
Steps Key Sequence Screens
1. Clear Stored Values in Variables Press 2nd, then F1
(to select F6)
  Press 1
(for Clear a-z)
  Press ENTER
(to Clear a-z)
2. Select Expand Function Press F2 (for Algebra menu)
  Press 3 (for 'expand(')
3. Input Function  
4. Input Independent Variable Press 'comma" key, then x, then ')'
NOTE: The independent variable can be x, t, or any other variable in the expression.
5. Execute Press ENTER
NOTE: If the result contains an arrow at the end of the expression, use up/right arrows to view the rest of the expression.
NOTE: If the calculator returns numerical values, then make sure you perform step #1!