The standard form for a complex number is a + bi, where i is the imaginary unit,
 . You do
complex arithmetic (addition, subtraction, multiplication, division, and exponentiation) the same way as you do real
number arithmetic. The imaginary unit, i, is located above the CATALOG key. Accordingly, press  i to enter i.
For example, we display (6 Ð 3i)/(4 + 5i).
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To do algebra with complex numbers, such as solve equations, factor expressions, or determine
zeros of a function, press  to access the Algebra menu. Then select A:Complex _. |
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From the complex submenu, select
1:cSolve(
2:cFactor(
3:cZeros(
to solve an equation, factor an expression, or determine zeros of a function over the complex numbers.