Texas Instruments TI-83 Manual Book page 546

To save keystrokes, you can recall the last expression you entered, and
then edit it for a new calculation.
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
5. Press } to move the cursor onto the
the formula. Press ¹ to edit the quadratic-
formula expression to become:
b b 2 4 ac
2 a
6. Press Í to find the other solution for the
quadratic equation 3X
TI-83 Plus Activities
2
+ 5X + 2 = 0.
sign in
+
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