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 1:4Frac from the MATH
menu.
When you press 1, Ans4Frac 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–b24ac–+ 2a
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