七年级数学下册整式的加减法计算题 359.docx
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七年级数学下册整式的加减法计算题359
-(x2y-4xy-9)+7(x2y+9xy-2)
88
(—x2-25x+16y)-(—x2-16x-14y)
77
11
-—(6k3-9k2-5)-—(2k3+8k2+5k)
43
(6m2-6m-7)+(4m-2n-5)
(2x2-7x-6)-2(6x2+6x)
-6(x2-6)-4(x2+7)
-(x2y+9xy+9)-2(x2y+7xy+3)
19
(—x2-16x-18y)-(—x2-10x-11y)
88
11
-—(6k3-4k2-2)-—(6k3+3k2-6k)
22
(9m2-m+4)+(9m-n+3)
(4x2-7x+6)+2(8x2-5x)
-9(x2-7)-4(x2+5)
-(x2y-4xy+2)+9(x2y-7xy+2)
79
(—x2-19x+10y)-(—x2+12x-29y)
88
11
-—(7k3-5k2+5)+—(3k3-3k2+4k)
65
(2m2-6m+4)+(2m+9n+2)
(6x2-3x-8)-3(7x2+9x)
-3(x2-5)-9(x2-5)
-(x2y+9xy+9)-6(x2y-5xy-6)
61
(—x2-28x-12y)-(—x2+12x+10y)
77
11
-—(4k3+5k2+4)+—(6k3-k2+7k)
22
(6m2+9m+7)-(4m+3n-3)
(8x2-6x+4)-9(3x2+5x)
-7(x2+9)-5(x2+6)
-(x2y-7xy+6)+9(x2y-7xy-4)
24
(—x2-24x+13y)-(—x2-18x+13y)
33
11
-—(4k3-8k2+4)+—(9k3-3k2-5k)
22
(3m2+3m+4)-(9m-4n-3)
(6x2-5x+2)+3(4x2+3x)
-9(x2-7)+8(x2+8)
-(x2y+4xy+7)-8(x2y-8xy+9)
24
(—x2-11x-11y)+(—x2-19x+22y)
33
11
-—(2k3+8k2-8)-—(2k3-6k2+5k)
24
(5m2+7m-3)+(6m+3n+1)
(7x2-5x+1)+6(2x2-3x)
-5(x2-7)+6(x2-1)
-(x2y+9xy+9)+9(x2y-6xy+4)
68
(—x2-30x+14y)-(—x2+15x-19y)
77
11
-—(4k3+3k2-6)+—(4k3-4k2-5k)
62
(9m2+9m+2)-(m-4n+8)
(2x2+6x-9)-2(5x2+8x)
-2(x2+8)+7(x2+3)
-(x2y-9xy-5)-9(x2y+5xy-8)
99
(—x2-10x+10y)-(—x2+20x-12y)
88
11
-—(2k3-4k2+5)+—(5k3+8k2-4k)
45