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(x-3)(x-2)(x-1)(x+1)(x+2)(x+3)+36
人气:366 ℃ 时间:2020-05-31 01:35:06
解答
(x-3)(x-2)(x-1)(x+1)(x+2)(x+3)+36
=(x-3)(x+3)(x-2)(x+2)(x-1)(x+1)+36
=(x^2-9)(x^2-4)(x^2-1)+36
=(x^4-13x^2+36)(x^2-1)+36
=x^6-14x^4+49x^2-36+36
=x^6-14x^4+49x^2
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