x的四次方-x的三次方-x+1 (因式分解)
问题描述:
x的四次方-x的三次方-x+1 (因式分解)
答
x^4-x^3-x+1=x^3(x-1)-(x-1)=(x-1)(x^3-1)
答
x^4-x^3-x+1
=x^3(x-1)-(x-1)
=(x-1)(x^3-1)
=(x-1)(x-1)(x^2+x+1)