4x(2y-y)与2y(y-2x)的公因式是
问题描述:
4x(2y-y)与2y(y-2x)的公因式是
答
4x(2y-y)
=8xy-4xy
=4xy
=2x*2y
2y(y-2x)
=2y^2-4xy
=2y(y-2x)
公因式是2y