a³-2a²+a分解因式还有一题4xy²-4x²y-y³
问题描述：
a³-2a²+a分解因式
还有一题4xy²-4x²y-y³
答
提取公因式a a³-2a²+a
=a（a²+2a+1）
=a（a+1）²
同理 4xy²-4x²y-y³
=-y(4x²-4xy+y²)
=-y(2x-y)²
答
a³-2a²+a
=a(a²-2a+1)
=a(a-1)²
4xy²-4x²y-y³
=-y(4x²-4xy+y²)
=-y(2x-y)²