HP 48gII Graphing Calculator Uživatelský manuál stáhnout pdf (Strana 82)

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Factoring an expression

In this exercise we will try factoring a polynomial expression. To continue the

previous exercise, press the ` key. Then, launch the Equation Writer again

by pressing the ‚O key. Type the equation:

XQ2™+2*X*~y+~y Q2™-

~‚a Q2™™+~‚b Q2

resulting in

Let’s select the first 3 terms in the expression and attempt a factoring of this

sub-expression: ‚—˜‚™‚™ . This produces:

Now, press the @FACTO soft menu key, to get

Press ‚¯to recover the original expression. Next, enter the following

keystrokes: ˜˜˜™™™™™™™———‚™ to select

the last two terms in the expression, i.e.,

press the soft menu key, to get

Press ‚¯to recover the original expression. Now, let’s select the entire

expression by pressing the upper arrow key (—) once. And press the

@FACTO soft menu key, to get

@FACTO

1 2 ... 77 78 79 80 81 82 83 84 85 86 87 ... 863 864

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HP 48gII Graphing Calculator Uživatelský manuál Strana 82

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