七年级数学下册整式的加减法计算题 382.docx
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七年级数学下册整式的加减法计算题382
(4m2-m+9)-(8m+9n+5)
(x2-6x-4)-4(6x2-x)
-6(x2-7)+8(x2+6)
-(x2y+5xy+4)-2(x2y-9xy-7)
61
(—x2-12x-17y)-(—x2-17x+16y)
55
11
-—(7k3-8k2-6)-—(3k3+2k2+9k)
23
(4m2-3m+4)+(7m+3n+5)
(8x2+7x+8)+8(7x2-3x)
-4(x2-7)-5(x2-1)
-(x2y+8xy+2)+3(x2y-2xy-9)
11
(—x2-29x+11y)+(—x2-12x+16y)
44
11
-—(3k3+5k2-4)+—(k3-4k2+3k)
25
(3m2+6m+3)-(8m+9n-9)
(4x2-3x-1)+6(8x2-3x)
-2(x2+5)-9(x2-6)
-(x2y-3xy-7)-7(x2y-3xy-3)
51
(—x2-12x+11y)-(—x2+15x-17y)
66
11
-—(5k3+4k2+7)+—(k3+9k2-5k)
44
(3m2+2m+6)+(3m-3n+4)
(7x2+3x-2)+2(8x2-x)
-6(x2-1)-6(x2+6)
-(x2y+6xy+5)+8(x2y+5xy+4)
31
(—x2-18x+17y)+(—x2-15x-22y)
44
11
-—(9k3+6k2-7)-—(k3-7k2-5k)
42
(4m2-5m+9)+(2m+6n-7)
(6x2+6x-4)+8(9x2+6x)
-6(x2-4)+9(x2-9)
-(x2y+3xy+4)-5(x2y+7xy-7)
71
(—x2-12x-15y)-(—x2+14x-22y)
66
11
-—(3k3-5k2+2)-—(9k3-4k2-3k)
45
(8m2-9m+9)+(5m+5n+9)
(7x2+x+8)-7(6x2+3x)
-7(x2+8)+7(x2-1)
-(x2y-8xy+2)+7(x2y+5xy-2)
11
(—x2+10x-11y)-(—x2+13x+16y)
33
11
-—(3k3-3k2-9)+—(4k3+k2-2k)
64
(2m2+2m-2)+(3m+n-6)
(8x2+9x+7)-9(6x2-7x)
-8(x2-5)+7(x2-1)
-(x2y-7xy-5)+7(x2y-8xy+8)
41
(—x2-11x+10y)+(—x2-10x-28y)
33
11
-—(9k3-3k2-3)+—(5k3+2k2-8k)
25
(5m2+6m-9)-(6m+9n-4)
(x2+x-7)+6(4x2+4x)
-4(x2-3)-7(x2-3)