Texas Instruments TI-84 User 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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