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整式的乘除运算
(x^2-1/9)(x^2+1/3x+1/9)(x^2-1/3x+1/9)
人气:142 ℃ 时间:2020-06-26 13:21:48
解答
(x^2-1/9)(x^2+1/3x+1/9)(x^2-1/3x+1/9)
=(x-1/3)(1+1/3)(x^2+1/3x+1/9)(x^2-1/3x+1/9)
=(x-1/3)(x^2+1/3x+1/9)(1+1/3)(x^2-1/3x+1/9)
=(x^3-1/3^3)(x^3+1/3^3)
=x^6-1/3^6
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