Factor polynomial $$ x^{2}-y^{2}+7y-7x $$
Answer
It seems that $ \color{blue}{ x^{2}-y^{2}+7y-7x } $ cannot be factored out.
Explanation
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Polynomial Factoring Calculator
It seems that $ \color{blue}{ x^{2}-y^{2}+7y-7x } $ cannot be factored out.