factorise
x3-23x2+142x-20
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https://www.meritnation.com/ask-answer/question/factorise-following-polynomial-by-using-factor-theorem-1-x3/polynomials/2571056
Here is the link for the answer to a similar query:
https://www.meritnation.com/ask-answer/question/factorise-following-polynomial-by-using-factor-theorem-1-x3/polynomials/2571056