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x^2n+6x^n-y^2m+9 因式分解
人气:275 ℃ 时间:2020-09-20 12:53:18
解答
x^2n+6x^n-y^2m+9
=(x^2n+6x^n+9)-y^2m
=(x^n+3)^2-y^2m
=(x^n+3+y^m)(x^n+3-y^m)
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