Calculator User Manual

Chapter 17: Activities 463
Displaying Complex Results
Displaying Complex ResultsDisplaying Complex Results
Displaying Complex Results
Now solve the equation 2x
2
N x + 3 = 0. When you set a+bi complex number mode, the
TI-84 Plus displays complex results.
5. Press } to move the cursor onto the
+
sign in the formula. Press ¹ to edit the
quadratic-formula expression to become:
6. Press Í to find the other solution for
the quadratic equation 3x
2
+5x+2=0.
1. Press z † † † † † † (6 times),
and then press ~ to position the cursor
over
a+bi. Press Í to select a+bi
complex-number mode.
b– b
2
4ac––
2a
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