因式分解:x3+2x-3
问题描述:
因式分解:x3+2x-3
X3指X的3次方
在线等,谢谢
答
x^3+2x-3
=x^3+(x^2-x^2)+2x-3
=(x^3-x^2)+(x^2+2x-3)
=x^2(x-1)+(x-1)(x+3)
=(x-1)(x^2+x+3)