化简3(x눀y+xy)-4(x눀y-xy)-5x눀y,急急急!!!

2025-05-17 15:16:34
推荐回答(2个)
回答1:

3(x²y+xy)-4(x²y-xy)-5x²y
=3x²y+3xy-4x²y+4xy-5x²y
=-6x²y+7xy

回答2:

5xy-8x*xy