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(X4-X2-4)(X4+X2-4)+10等于多少?
人气:217 ℃ 时间:2020-09-30 22:15:59
解答
(4x-2x-4)(4x+2x-4)+10 =(2x-4)(6x-4)+10 =12x-8x-24x+16+10 =12x-32x+26 =2(6x-16x+13)
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