估计你写的题目有误,是否应该是：18x(x-2y)³-24xy(2y-x)²-6y(2y-x)³= 18x(x-2y)³-24xy(x-2y)²+6y(x-2y)³= (x-2y)²[18x(x-2y)-24xy+6y(x-2y)]= 6(x-2y)²[(3x+y)(x-2y)-4xy]=...