Factor polynomial $$ a^{4}+a^{2}-b^{4}-b^{2} $$
Answer
It seems that $ \color{blue}{ a^{4}+a^{2}-b^{4}-b^{2} } $ cannot be factored out.
Explanation
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Polynomial Factoring Calculator
It seems that $ \color{blue}{ a^{4}+a^{2}-b^{4}-b^{2} } $ cannot be factored out.