x4+2x3+x2+1+2(x+x2)因式分解
问题描述:
x4+2x3+x2+1+2(x+x2)因式分解
答
x4+2x3+x2+1+2(x+x2)
=(x2+x)^2+2(x2+x)+1
=(x2+x+1)^2