Question

数学因式分解！！！急急急啊啊啊！！！

Answer 1

15.2(a-1) 16.2(a+1)(a-1) 17.(a+1)^2 18.(a-2b)^2 19.(a-7)^2 20.(x-a)^2

追问

拜托了

追答

1. a(a-3)

2. (x-1)^2

3. a(x+y)(x-y)

4. ab(a+1)(a-1)

5. (x-2)^2

6. (3x+1)^2

7. (a-3)^2

8. x(x+2)

9. (4x+2y)(4x-2y)

10. m(m-1)

11. -2(m-3)
    

追问

看不懂啊

追答

....这就是答案..

追问

1-14

追答

1. x(x+3)

2. (x+3)(x-3)

3. (2x+1)(2x-1)

4. (x-2)^2

5. (x+3)^2

6. (a-1)^2

7. (x-3)(x+1)

8. (x-3)(x+2)

9. (x+1)(x+2)

10. 6(x+2)

11. 2(x-2)

12. 3(2-x)

13. (x-y)^2

14. x(x-1)