（2X-3Y-2XY)-(X-4Y+XY)
=2X-3Y-2XY-X+4Y-XY
=X+Y-3XY
因为x加y等于110,xy等于33
所以原式等于：110-33*3=11
已知x加y等于110,xy等于33,求(2x减3y减2xy)减(x减4y加xy)的值.
已知x加y等于110,xy等于33,求(2x减3y减2xy)减(x减4y加xy)的值.
数学人气：711 ℃时间：2019-12-16 03:49:26
优质解答
我来回答
类似推荐
猜你喜欢
- 1小学四年级数学找规律
- 2写出下列反应得化学方程式,标出电子转移的情况,并指出氧化剂和还原剂
- 3沿圆锥底面直径切成两个半圆锥,其切面底是10cm,高是12cm,求圆锥体积
- 4There is always heavy t____ during the rush hour.(根据首字母填空）
- 5木兰诗中描写了一个怎样的花木兰
- 6可题是 It is_____ _____ _____ to be invited here today
- 7（1）ls your classroom the largest one in your shcool? (2)ls your school the largest in your city?
- 8she knows how to get me to be happy同义句
- 9I advise that she __ another day.
- 10What is human in Chinese?