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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
acbb
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
acbb
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).
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