giúp mik...

1,-a-b+x(a+b)

2, ax+ay+bx+by

3, ax+ay+2x+2y

4, ax+ay-bx-by

5, ax+ay-2x-2y

6, -2x-2y+ax+ay

7, x^2+xy+2x-2y

8, x^2-xy-2x+2y

9, x^2-xy+2x-2y

10, 10ax-5ax-5ay+2x-y

giúp mik...

1,-a-b+x(a+b)

2, ax+ay+bx+by

3, ax+ay+2x+2y

4, ax+ay-bx-by

5, ax+ay-2x-2y

6, -2x-2y+ax+ay

7, x^2+xy+2x-2y

8, x^2-xy-2x+2y

9, x^2-xy+2x-2y

10, 10ax-5ax-5ay+2x-y

giúp mik...

1,-a-b+x(a+b)

2, ax+ay+bx+by

3, ax+ay+2x+2y

4, ax+ay-bx-by

5, ax+ay-2x-2y

6, -2x-2y+ax+ay

7, x^2+xy+2x-2y

8, x^2-xy-2x+2y

9, x^2-xy+2x-2y

10, 10ax-5ax-5ay+2x-y

mọi người giúp mình với ạ, tuy hơi dài... mai mình nộp rồi

1, x+y+a(x+y)

2, x-y-a(x-y)

3, a+b+x(a-b)

4, a-b+x(a-b)

5, a-b-x(a-b)

6, a-b-x(b-a)

7, x(a+b)-a-b

8, a(x-y)-x+y

9, a(x+y)-x-y

10, x(a-b)-a+b