Texas Instruments TI-83 PLUS - Manual (Page 548)

TI-83 Plus Activities 545
4. Press y [ to recall the store instruction,
and then press y [ again to recall the
quadratic-formula expression,
a
ac b b
2
4 2
− −
−
5. Press Í to find one solution for the
equation 2X 2 N X + 3 = 0.
6. Press y [ repeatedly until this quadratic-
formula expression is displayed:
a
ac b b
2
4 2
− + −
7. Press Í to find the other solution for the
quadratic equation: 2X 2 N X + 3 = 0.
Note: An alternative for solving equations for real numbers is to use the built-in
Equation Solver (Chapter 2).