因式分解 x^6-2x^4+6x^3+x^2-6x+9
问题描述:
因式分解
x^6-2x^4+6x^3+x^2-6x+9
答
解:原式=x^6-2x^3(x-3)+(x^2-6x+9)
=x^6-2x^3(x-3)+(x-3)^2
=(x^3-(x-3))^2
=(x^3-x+3)^2
=(x^3-x+3)(x^3-x+3)