问题
填空题
x3-xy2-x2y+7按x的降幂排列为______．
答案
x3-xy2-x2y+7按x的降幂排列为x3-x2y-xy2+7．
故答案为：x3-x2y-xy2+7．
搜题请搜索小程序“爱下问搜题”
x3-xy2-x2y+7按x的降幂排列为______．
x3-xy2-x2y+7按x的降幂排列为x3-x2y-xy2+7．
故答案为：x3-x2y-xy2+7．