Solve the equation [tex]x^4 - x^2 = k[/tex] where [itex]k>0[/itex].(adsbygoogle = window.adsbygoogle || []).push({});

Am I being thick or how do I solve this for [itex]x[/itex]?

Factorising gives [tex]x^2(x^2-1)=k[/tex] but now where?

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# Homework Help: Solving an equation

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