Re: Can TI-85 calcs FOIL?
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Thanks for correcting my gross oversight. I haven't used my 85 in quite
some time. I was thinking of the 82 and the program I wrote for it. Many
apologies for my temporary ignorance.
<pre>
--
Rick Homard
rhomard@mci2000.com
Jacob M Kirsch <jmkirsch@cs.buffalo.edu> wrote in article
<57809c$d22@prometheus.acsu.buffalo.edu>...
> rhomard (rhomard@MCI2000.com) wrote:
> : First off x^2 + 25 does not equal (x+5)(x-5). :^)
> : The 85 will not do this with a built-in routine. I wrote a program for
>
> Yes it will...just use "POLY". Enter the order of the polynomial
> that you want to factor (i.e. 2 for x^2 - 25), and enter the coefficients
> in the proper places (in this case a2=1, a1=0 and a0=-25). Press F5 to
> solve it, and it will give you the solutions for x. In this example
you'd
> get x1=5, x2=-5. Simple algebra tells you that this is (x-5)(x+5).
> It's in the manual.
>
> Jacob Kirsch
> jmkirsch@cs.buffalo.edu
>
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