姓名
22
(1)6x-13xy+6y; (2)8xy+6xy-35;
2222
(3)18x-21xy+5y; (4)2(a+b) +(a+b)(a-b)-6(a-b) . 2
2
(5)2x2+3x+1; (6)2y
(7)6x2-13x+6; (8)3a
(9)6x2-11xy+3y2; (10)4m
(11)10x2-21xy+2y2;
(13)4n2+4n-15; (14)6a
(15)5x2-8x-13; (16)4x
(17)15x2+x-2; (18)6y
(19)20-9y-20y2; (20)7(x 2
+y-6; 2
-7a-6; 2+8mn+3n2
; 2-22mn+15n2
. 2
+a-35; 2
+15x+9 2
+19y+10; -1) 2+4(x-1)(y+2)-20(y+2)2
1
(12)8m
因篇幅问题不能全部显示,请点此查看更多更全内容