x^3-1因式分解,
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x^3-1因式分解,
x^3-1因式分解,
x^3-1因式分解,
x^3-x^2 +x^2-x +x-1
=x^2(x-1)+x(x-1)+(x-1)
=(x-1)(x^2+x+1)
x^3-1因式分解,
x^3-1因式分解,
x^3-1因式分解,
x^3-x^2 +x^2-x +x-1
=x^2(x-1)+x(x-1)+(x-1)
=(x-1)(x^2+x+1)