因式分解x(x-1)+y(y+1)-2xy-72初一数学仅此一题谢谢快啊

来源：学生作业帮编辑：灵鹊做题网作业帮分类：数学作业时间：2024/05/02 18:07:56

=x^2-x+y^2+y-2xy-72
=(x^2-2xy+y^2)-(x-y)-72
=(x-y)^2-(x-y)-72
=(x-y-9)(x-y+8)

xy+x+y+1因式分解 1-x-y+xy 因式分解因式分解xy-x-y+1 xy-x-y+1因式分解（xy-x-y+1)^2因式分解 x^2+y^2-x-y-xy+1如何因式分解因式分解 x2(x+1)-y(xy+x) （x+y)*（x+1)-(xy+y*y)因式分解为多少 y^3+xy^2+2xy+x^2-1 因式分解因式分解xy²-2xy+x+2y-1 因式分解(x+y)^3+2xy(1-xx-y)-1 因式分解：(一)27x^2+54x^2y+36xy^2+8y^3 (二)1-3(x-y)+3(x-y)^2-(x-y)^