第1个回答 2012-02-05
因式分解练习
1. 2.
3.1-a2+2ab-b2= 4.1-a2-b2-2ab=
5.x2+2xy+y2-1= 6.x2-2xy+y2-1=
7.x2-2xy+y2-z2= 8. =
9. = 10. =
11.x2 - 4y2 + x + 2y = 12.
13. 14.ax-a+bx-b=
15.a2-b2-a+b= 16.4a2-b2+2a-b=4x
17、(a-b)+(b2-a2); 18、(a2+b2)2-4a2b2;
19、(x+y)2-3(x+y)+2; 20、4a2-b2+6a-3b;