Texas Instruments -84 Plus, Manual Book

Page: 465 / 696

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
4 ac – +
2 a
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