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JoE Hartman Posted on Jul 13, 2007

TI-89 Factoring Not Working

I am trying to use the Factor function and it is not working. When entering f2, 2 for factor(, (x-5)^2,x) I should get x^2-10x+25, instead I get the result (5,)^2.... Why? There must be something in the mode that is set wrong, but I am not sure what..Your thoughts...

  • mathwizard69 Nov 15, 2007

    When i use the factor function on my calculator under F2 it tells me i have a dimension error, what does that mean and how can I get my calculator to factor

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Anonymous

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  • Posted on Oct 07, 2007
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I think what you want to do is not to factor but to expand, which is the option right under factor [F2, 3]. expand((x-5)^2) = x^2-10x+25

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Does a TI 89 have an advantage over a TI 84 in a 10th grade algebra class? My sons teacher won't let him use an 89. He says it does too much of the work for him. Is this right?

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