## Factor

If needed, press **HOME** to return to the home screen. The
factor option is located in the Algebra menu. The factor option can be
applied to either an algebraic expression or a number.

**Factor an Algebraic Expression**

To factor an algebraic
expression, press to access the
Algebra menu. Press to select
**2:factor**. The syntax for factoring an algebraic expression is

factor(expression,variable)

For example, let's factor x
^{4} Ð 9. After the factor( in the entry line, type

X ^
4 Ð 9 , X ) ENTER

Hence, .

The Algebra menu item 2:factor gives a factorization over the real
numbers. To obtain a factorization over the complex numbers, first
press to access the Algebra menu.
Highlight **A:Complex **.
Press the blue right thumb pad arrow to see the complex pop-up submenu.
Press to select
**2:cFactor**.

| After **cfactor(** is pasted
into the entry line, type in the expression and variable to be factored,
exactly as with the factor option. The factorization
is
displayed. |

** Factor a Number**

When applied to a number, factor
displays a prime factorization of a given integer. To factor an integer
into its prime number factors, press to access the Algebra menu. Press to select **2:factor**. The syntax for
factoring is
factor(integer)
For example, the screen at right displays the prime factorization for
n = 1234567890. | |