2(a-b)²-(a-b)和3（x-y)²-(x-y)³因式分解

2(a-b)²-(a-b)和3（x-y)²-(x-y)³因式分解
2(a-b)²-(a-b)和3（x-y)²-(x-y)³因式分解

2(a-b)²-(a-b)和3（x-y)²-(x-y)³因式分解
2(a-b)²-(a-b)＝(a-b)(2a-2b-1)
3（x-y)²-(x-y)³ = (x-y)²(3-x+y)

2(a-b)²-(a-b)=(a-b)(2a-2b-1)