来自倪冰的问题
【求一道因式分解题步骤和答案、加急~(xy+1)(x+1)(y+1)+xy=(xy+1)(xy+x+y+1)+xy】
求一道因式分解题步骤和答案、加急~(xy+1)(x+1)(y+1)+xy=(xy+1)(xy+x+y+1)+xy
1回答
2020-07-21 22:20
【求一道因式分解题步骤和答案、加急~(xy+1)(x+1)(y+1)+xy=(xy+1)(xy+x+y+1)+xy】
求一道因式分解题步骤和答案、加急~(xy+1)(x+1)(y+1)+xy=(xy+1)(xy+x+y+1)+xy
(xy+1)(x+1)(y+1)+xy=(xy+1)(xy+x+y+1)+xy
=(xy+1)(xy+1)+(x+y)(xy+1)+xy
=[(xy+1)+x][(xy+1)+y]
;;;应该比较清楚了吧