Question 838582
Subtract the polynomials. 

8x^3+x^2+1 from 3x^3-x-6


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{{{(3x^3-x-6)-(8x^3+x^2+1)}}}
{{{3x^3-x-6-8x^3-x^2-1}}}
{{{3x^3-8x^3-x^2-x-6-1}}}
{{{highlight(-5x^3-x^2-x-7)}}}