Question about Texas Instruments TI-89 Calculator

# Algebra please, How can I solve this? expand((x-5)^3). I´d like to use the "x" variable but a message " Non algebric-variable in expxpression" is appear. Thanks

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For expand, you don't need to put ",x" at the end.

just do: expand( (x-5)^3 )
and you should get: x^3-15x^2+75x-125

Posted on May 21, 2008

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Posted on Jan 02, 2017

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Start by using the distributive property to expand the term 5(I-31)=5*I-5*31=5*I-155.
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