You tell your teacher the only practical use for such a thing is in theoretical sciences and teaching.
English
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Um. This is just factoring. It's actually plenty useful.
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he's right. I'm in multivariable calculus right now and there is some factoring involved. If I had to stress one important to learn in highschool math is to learn factoring/multiplying polynomials and all. that stuff does come back as you go higher up in math.
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I'd say that just mastering Algebra in general is enough to push you through the majority of those classes :)
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this as well. algebra is the greatest tool. system of equations, factoring, polynomial multiplication. everythign you learn in algebra 1 and algebra 2 will make a great re-appearance in your future college math courses.