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# Quadractic help A-level Maths watch

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1. I have a fraction that needs to be converted to a quadratic but I don't know how to. I have ((a^3)-1)/(a-1) and it needs to become (a^2)+a+1. HOW???
2. (Original post by Jay_Gatsby123)
I have a fraction that needs to be converted to a quadratic but I don't know how to. I have ((a^3)-1)/(a-1) and it needs to become (a^2)+a+1. HOW???
You have presumably learned the factor theorem and so know how to show that (a-1) is a factor of a^3-1
Use polynomial long division or another method to factorise your cubic into a quadratic and a linear factor and cancel the common factor.

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Updated: February 2, 2017
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