因式分解:8x(y-2x)+1-y^2
问题描述:
因式分解:8x(y-2x)+1-y^2
快
答
8x(y-2x)+1-y^2
=8xy-16x^2+1-y^2
=-(16x^2-8xy+y^2)+1
=-(4x-y)^2+1