七年级数学下册整式的加减法计算题 561.docx
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七年级数学下册整式的加减法计算题561
-(x2y+4xy-7)+6(x2y-5xy+7)
14
(—x2-21x+17y)+(—x2-12x-12y)
33
11
-—(9k3+8k2+9)+—(8k3+2k2-8k)
65
(9m2-3m-3)+(2m-n+4)
(2x2-9x-9)-4(6x2-8x)
-9(x2+1)-3(x2+6)
-(x2y-4xy+6)+2(x2y-4xy-4)
16
(—x2-25x-11y)-(—x2-10x-26y)
77
11
-—(2k3-k2+3)+—(2k3-8k2-1k)
43
(5m2-8m+3)+(3m-4n-6)
(6x2-2x-4)+7(9x2-4x)
-3(x2-5)+2(x2+9)
-(x2y-7xy-7)-3(x2y-3xy+3)
24
(—x2+24x-12y)-(—x2+14x-27y)
33
11
-—(3k3+k2-1)+—(2k3+k2-8k)
45
(m2+m+1)+(6m-2n+3)
(2x2-8x+2)-6(x2-8x)
-4(x2-5)+7(x2-3)
-(x2y-2xy+3)-6(x2y+7xy-5)
17
(—x2+21x+13y)-(—x2-13x-26y)
88
11
-—(k3-k2+2)+—(8k3-8k2-8k)
66
(m2-9m+3)-(2m-9n+3)
(6x2+7x-2)-9(2x2+3x)
-2(x2-3)+8(x2+5)
-(x2y-9xy+9)-3(x2y+6xy+5)
44
(—x2+20x+18y)+(—x2-12x+19y)
55
11
-—(9k3+4k2+6)+—(5k3-6k2-8k)
22
(2m2+6m+7)+(3m+9n-1)
(4x2+2x+7)-9(x2-6x)
-4(x2+5)-6(x2+9)
-(x2y-5xy-3)-7(x2y+7xy+8)
81
(—x2+15x+16y)-(—x2-20x-14y)
77
11
-—(4k3-7k2-1)+—(6k3+8k2+8k)
22
(5m2-3m+4)-(5m-8n-4)
(4x2-4x-7)+3(4x2-6x)
-2(x2+9)-5(x2+2)
-(x2y+3xy+8)-8(x2y-2xy-8)
11
(—x2-28x+20y)+(—x2-15x-19y)
55
11
-—(3k3-2k2+1)+—(5k3-k2+8k)
63
(6m2+8m-9)-(3m+7n-1)
(4x2-5x+3)-5(5x2-6x)
-2(x2+6)-5(x2-9)
-(x2y-6xy+4)+4(x2y+3xy+3)
71
(—x2-16x+13y)-(—x2+17x-17y)
88
11
-—(7k3-6k2+9)+—(3k3+4k2-5k)
66