Texas Instruments TI-89 Manual Book page 26

Steps
Expanding Expressions
1. Expand the expression
You can enter "expand" on the entry
line by typing EXPAND on the
keyboard, or by pressing „ and
selecting 3:expand( .
2. (Optional) Enter other
expressions on your own.
Reducing Expressions
1. Reduce the expression
2 ì 2xì 5)/(xì 1) to its simplest
(x
form.
You can enter "propFrac" on the entry
line by typing PROPFRAC on the
keyboard, or by pressing „ and
selecting 7:propFrac(.
Factoring Polynomials
1. Factor the polynomial
with respect to .
x
You can enter "factor" on the entry
line by typing FACTOR on the
keyboard or by pressing „ and
selecting 2:factor( .
Solving Equations
1. Solve the equation
with respect to .
x
You can enter "solve(" on the entry
line by selecting "solve(" from the
Catalog menu, by typing SOLVE( on
the keyboard, or by pressing „ and
selecting 1:solve( .
The status line area shows the
required syntax for the marked item
in the Catalog menu.
TI.89
Keystrokes
3
. „ 3
(xì 5)
c X | 5 d Z 3
d
¸
„ 7
c X Z 2 | 2 X
| 5 d e
c X | 1 d d
¸
2
(x ì 5) „ 2
X Z 2 | 5
b X d
¸
2
ì 2xì 6=2 „ 1
x
X Z 2 | 2 X | 6
Á 2 b X d
¸
³ ›
TI.92 Plus
Keystrokes
„ 3
c X | 5 d Z 3
d
¸
„ 7
c X Z 2 | 2 X
| 5 d e
c X | 1 d d
¸
„ 2
X Z 2 | 5
b X d
¸
„ 1
X Z 2 | 2 X | 6
Á 2 b X d
¸
Chapter 1: Getting Started
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