
分解因式:x的五次方-x的四次方+x³-x²+x-1
展开全部
x^5-x^4+x^3-x^2+x-1
=x^4(x-1)+x^2(x-1)+(x-1)
=(x-1)(x^4+x^2+1)
=(x-1)(x^4+2x^2+1-x^2)
=(x-1)[(x^2+1)^2-x^2]
=(x-1)(x^2+1+x)(x^2+1-x)
=x^4(x-1)+x^2(x-1)+(x-1)
=(x-1)(x^4+x^2+1)
=(x-1)(x^4+2x^2+1-x^2)
=(x-1)[(x^2+1)^2-x^2]
=(x-1)(x^2+1+x)(x^2+1-x)
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