因式分解(x-1)的三次方+(x-2)的三次方+(3-2x)的三次方
发布网友
发布时间:2024-10-10 06:36
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热心网友
时间:2024-11-12 19:31
(x-1)^3+(x-2)^3+(3-2x)^3=(x-1+x-2)[(X-1)^2-(X-1)(X-2)+(X-2)^2]+(3-2x)^3
=(2X-3)[(X-1)^2-(X-1)(X-2)+(X-2)^2-(3-2X)^2]=(2X-3)[(X-1)^2-(X-1)(X-2)+(1-X)(3X-5)]
=(2X-3)(X-1)[(X-1)-(X-2)-(3X-5)]
=(2X-3)(X-1)(6-3X)
=-3(2X-3)(X-1)(X-2)
热心网友
时间:2024-11-12 19:32
(*^__^*) ,是八(1)班的么?