Texas Instruments TI-82 STATS - Converting to a Fraction: The Quadratic Formula

Getting Started 7
82STAT~1.DOC TI-83 international English Bob Fedorisko Revised: 10/27/05 1:33 PM Printed: 10/27/05 3:30
PM Page 7 of 18
You can show the solution as a fraction.
1. Press  to display the
MATH menu.
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.
To save keystrokes, you can recall the last expression you entered, and then edit it for
a new calculation.
4. Press y [
ENTRY] (above Í) to recall the
fraction conversion entry, and then press y
[
ENTRY] again to recall the quadratic-formula
expression,
−
+−bb ac
a
2
4
2
5. Press } to move the cursor onto the + sign in
the formula. Press ¹ to edit the quadratic-
formula expression to become:
−
−−bb ac
a
2
4
2
6. Press Í to find the other solution for the
quadratic equation 3X
2
+ 5X + 2 = 0.
Converting to a Fraction: The Quadratic Formula