How can you proof that(adsbygoogle = window.adsbygoogle || []).push({});

[tex]a^2 (1 + b^4) + b^2(1 + a^4) \leq (1 + a^4)(1 + b^4)[/tex]?

I factorised [tex]a^2 (1 + b^4) + b^2(1 + a^4)[/tex] to [tex](a^2 + b^2)(1+a^2b^2)[/tex], but I don't really know where to go from here.

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# Help with algebra

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