七年级数学下册整式的加减法计算题 91.docx
《七年级数学下册整式的加减法计算题 91.docx》由会员分享,可在线阅读,更多相关《七年级数学下册整式的加减法计算题 91.docx(7页珍藏版)》请在冰点文库上搜索。
![七年级数学下册整式的加减法计算题 91.docx](https://file1.bingdoc.com/fileroot1/2023-6/2/455ac310-702c-475c-82dc-49fd56d06e1f/455ac310-702c-475c-82dc-49fd56d06e1f1.gif)
七年级数学下册整式的加减法计算题91
-(x2y+4xy-2)+7(x2y+3xy+7)
81
(—x2-12x-11y)-(—x2-11x-13y)
77
11
-—(3k3-3k2+5)-—(2k3+5k2-7k)
24
(9m2-9m+3)-(7m-3n-5)
(3x2+5x-8)-8(7x2-8x)
-3(x2+7)-7(x2-8)
-(x2y+4xy+7)+5(x2y+6xy+2)
61
(—x2-29x+16y)-(—x2+15x+17y)
55
11
-—(4k3-8k2-8)-—(7k3-6k2+8k)
44
(3m2+4m+2)+(9m+3n+3)
(x2-9x-3)+3(3x2+8x)
-4(x2+3)-6(x2+9)
-(x2y-4xy-8)-4(x2y-8xy-8)
71
(—x2-23x-12y)+(—x2-15x-12y)
88
11
-—(8k3+5k2-9)+—(6k3-2k2+3k)
45
(8m2-3m+9)-(m+9n-8)
(5x2-4x+4)+5(2x2-5x)
-6(x2-7)+8(x2+9)
-(x2y+4xy-6)+3(x2y-2xy-2)
15
(—x2+22x-19y)+(—x2-14x+13y)
66
11
-—(9k3+8k2+3)+—(7k3-7k2-2k)
43
(3m2+5m+5)-(3m-n+3)
(9x2-3x+1)-2(7x2+x)
-4(x2-8)-6(x2+5)
-(x2y-5xy+6)+6(x2y-2xy-2)
31
(—x2-12x-17y)-(—x2+15x-23y)
44
11
-—(5k3-6k2-4)-—(4k3+6k2-1k)
44
(9m2-5m-4)+(9m-n-6)
(7x2-9x-7)+6(9x2-8x)
-3(x2-2)+2(x2+8)
-(x2y-2xy-3)+3(x2y+6xy-3)
41
(—x2-15x+13y)+(—x2+12x-17y)
55
11
-—(3k3-7k2+7)-—(4k3-6k2+6k)
42
(6m2+2m-6)+(9m-n+8)
(5x2+8x-5)+9(2x2-5x)
-8(x2+9)-9(x2-5)
-(x2y+7xy-7)-5(x2y-9xy+6)
31
(—x2+16x-10y)-(—x2-14x-11y)
44
11
-—(4k3+3k2+2)-—(5k3+k2-6k)
65
(4m2-8m+9)+(7m+3n-5)
(x2-8x+2)+2(4x2+x)
-2(x2-5)+5(x2-8)
-(x2y+2xy+6)+6(x2y+5xy+9)
66
(—x2-27x+14y)+(—x2-11x-25y)
55
11
-—(2k3+5k2+9)-—(6k3+5k2-5k)
26