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Factor polynomial $$ 28x^{4}y^{2}+7x^{3}y-35x^{4}y^{3} $$
Answer
$$ 28x^{4}y^{2}+7x^{3}y-35x^{4}y^{3} = 7x^{3}y(4xy+1-5xy^{2}) $$
Explanation
Factor out common factor $ \color{blue}{ 7x^3y } $:
$$ 28x^4y^2+7x^3y-35x^4y^3 = 7x^3y ( 4xy+1-5xy^2 ) $$