a^4+2a^3-2a-1因式分解
问题描述:
a^4+2a^3-2a-1因式分解
答
a^4+2a^3-2a-1=a^4-1+2a^3-2a=(a^2+1)(a+1)(a-1)+2a(a+1)(a-1)=)(a+1)^3(a-1)
a^4+2a^3-2a-1因式分解
a^4+2a^3-2a-1=a^4-1+2a^3-2a=(a^2+1)(a+1)(a-1)+2a(a+1)(a-1)=)(a+1)^3(a-1)