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Answers
(7)です!
(x^4+1)(x^2+1)(x+1)(x-1)
=(x^4+1)(x^2+1)・{(x+1)(x-1)}
=(x^4+1)(x^2+1)(x^2-1)
=(x^4+1)・{(x^2+1)(x^2-1)}
=(x^4+1)(x^4-1)
=x^8-1
ありがとうございます😆
もし間違っていたらすみませんm(__)m
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ありがとうございます!