Texas Instruments TI-84 - Manual (Page 465)

Chapter 17: Activities 462
To save keystrokes, you can recall the last expression you entered, and then edit it for a
new calculation.
2. Press 1 to select 1: 4 Frac from the MATH
menu.
When you press 1 , Ans 4 Frac is displayed
on the home screen. Ans is a variable
that contains the last calculated answer.
3. Press
Í to convert the result to a
fraction.
4. Press
y [ (above Í) to recall
the fraction conversion entry, and then
press
y [ again to recall the
quadratic-formula expression,
b – b
2
4ac – +
2a
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