计算题 (2x-y)^2-(4x+y)(y-4x)
问题描述:
计算题 (2x-y)^2-(4x+y)(y-4x)
答
=4x-4xy+y-(y+4x)(y-4x) =4x-4xy+y-y+16x =20x-4xy =4x(5x-y)
计算题 (2x-y)^2-(4x+y)(y-4x)
=4x-4xy+y-(y+4x)(y-4x) =4x-4xy+y-y+16x =20x-4xy =4x(5x-y)