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Mathematics 18 Online
OpenStudy (lukecrayonz):

Why is my TI-89 being strange? Did I accidentily change a setting?

OpenStudy (lukecrayonz):

I attempt to factor something with f2, algebra, factor, and I put in the equation. It states: "Non-algebraic variable in expression", when I type in factor(5x^2+10x+15), any reason?

OpenStudy (lukecrayonz):

Nevermind, got it, had to do DelVar x.

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