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Factor polynomial $$ x^{6}y^{6}-x^{5}y^{4}+x^{4}y^{3}+x^{3}y^{3} $$
Answer
$$ x^{6}y^{6}-x^{5}y^{4}+x^{4}y^{3}+x^{3}y^{3} = x^{3}y^{3}(x^{3}y^{3}-x^{2}y+x+1) $$
Explanation
Factor out common factor $ \color{blue}{ x^3y^3 } $:
$$ x^6y^6-x^5y^4+x^4y^3+x^3y^3 = x^3y^3 ( x^3y^3-x^2y+x+1 ) $$