因式分解:(X-2Y)^2+(X-2Y)(2X+Y)=__
问题描述:
因式分解:(X-2Y)^2+(X-2Y)(2X+Y)=__
答
(X-2Y)^2+(X-2Y)(2X+Y)
=(X-2Y)[(X-2Y)-(2X+Y)]
=(X-2Y)(-X-3Y)
=-(X-2Y)(X+3Y)