帮帮忙，急!
(3X-4Y+2XY)-(2x-5y+5xy)
=3X-4Y+2XY-2X+5Y-5XY
=X+Y-3XY
=3-3*(-2)
=3+6
=9
=3X-4Y+2XY-2X+5Y-5XY
=X+Y-3XY
=3-3*(-2)
=3+6
=9
温馨提示：答案为网友推荐，仅供参考
已知X+Y=3,XY=-2,求(3X-4Y+2XY0-(2x-5y+5xy)的值
你可能感兴趣的内容
大家正在搜
