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数学
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计算(x²+x+1)(x²-x+1)
(x²+x+1)(x²-x+1)
=
人气:111 ℃ 时间:2020-03-21 19:36:16
解答
(x²+x+1)(x²-x+1)=
(x²+1+x)(x²+1-x)=
(x² + 1)² - x² =
x^4 + 2x² + 1 - x² =
x^4 + x² + 1
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