Question 224803
(w+f)(w^2-wf+f^2)
= w*(w^2-wf+f^2) + f*(w^2-wf+f^2)
= {{{w^3 - w^2f + wf^2 + w^2f - wf^2 + f^3}}}
= {{{w^3 + f^3}}}
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I first thought w+f was wtf.