Question

有分一.分解因式1.3a²-6a2.x²（x-y)+(y-x)3.（x+y)²+2（x+y

Answer 1

1 3a(a-2)

2 (x-y)(x-1)(x+1)

3 (x+y+1)²

4 (a-b+2)(a-b+2)

5 -y(x-y)²