因式分解:(a+1)^2-4a
问题描述:
因式分解:(a+1)^2-4a
要有步骤
答
=a²+2a+1-4a
=a²-2a+1
=(a-1)²
因式分解:(a+1)^2-4a
要有步骤
=a²+2a+1-4a
=a²-2a+1
=(a-1)²