Can you do this problem in under one minute?

If \(f(x)=(x+1)(x^2+x+1)\), expand \(f(x)f(-x)\).

There's a nice trick here that I made

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## Comments

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TopNewestDoesn't it turn into \((x^3+1)(1-x^3)\) so it's basically just \(1-x^6\)

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What makes you post this, \(\textbf{Mr. TrollKing}\) ?

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I thought it was interesting to pair up the factors in two ways. It seemed interesting to me :)

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Yeah great, that is cool.,.

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Nice! 1 - x^6 is that correct? Don't know if I made within 60 s or 100 s, but I think I used the trick you are referring to.

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Yes its 1-x^6

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1-x^3

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sorry, 1-x^6

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