将代数式x3+(2a+1)x2+(a2+2a-1)x+(a2-1)分解因式,得_.
问题描述:
将代数式x3+(2a+1)x2+(a2+2a-1)x+(a2-1)分解因式,得______.
答
xg+(2人+1)x2+(人2+2人-1)x+(人2-1)=xg+(2人+1)x2+(人2+2人)x-x+(人2-1)=(xg-x)+[(2人+1)x2+(人2+2人)x+(人2-1)]=x(x2-1)+[(2人+1)x+人2-1](x+1)=x(x+1)(x-1)+[(2人+1)x+人2-1](x+...