七年级数学下册整式的加减法计算题 283.docx
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七年级数学下册整式的加减法计算题283
-(x2y-4xy+6)+4(x2y-7xy+6)
61
(—x2+19x-19y)-(—x2-19x-20y)
77
11
-—(9k3-k2+9)+—(3k3+3k2-2k)
22
(7m2+8m+9)+(3m-4n-3)
(x2-6x+3)+4(3x2-4x)
-8(x2-1)-5(x2-6)
-(x2y+6xy-5)-5(x2y+4xy-2)
68
(—x2+14x+14y)-(—x2+16x+24y)
77
11
-—(k3-7k2-4)-—(5k3+7k2-6k)
22
(7m2-2m-2)+(8m+4n+1)
(4x2-7x+2)+6(7x2+9x)
-2(x2-6)-7(x2-9)
-(x2y-4xy+2)-7(x2y-5xy+6)
11
(—x2+29x-14y)+(—x2-15x-17y)
77
11
-—(8k3-4k2-7)+—(4k3-6k2+3k)
43
(3m2+4m+7)+(m-2n-2)
(x2-6x+2)-7(7x2-7x)
-4(x2+2)-2(x2-6)
-(x2y+5xy+9)-6(x2y+2xy+2)
41
(—x2-22x+10y)+(—x2+17x-27y)
33
11
-—(k3+3k2-6)+—(8k3+8k2+5k)
43
(4m2-4m+6)-(m+n+2)
(9x2+9x+2)+3(x2+2x)
-8(x2-9)-3(x2+8)
-(x2y+8xy-3)+7(x2y+2xy-6)
91
(—x2+19x+11y)-(—x2-14x+18y)
88
11
-—(8k3-3k2-5)+—(3k3+k2+5k)
26
(7m2+8m+5)+(2m-9n+6)
(4x2+4x+9)-6(8x2-9x)
-4(x2-7)+4(x2-1)
-(x2y+7xy-5)-3(x2y+2xy+8)
68
(—x2+29x-14y)+(—x2-14x+12y)
77
11
-—(8k3+3k2+3)+—(7k3+2k2+6k)
43
(9m2-6m+2)+(4m+9n+4)
(3x2+3x-2)+2(3x2+6x)
-7(x2-1)-6(x2+9)
-(x2y+7xy+2)+2(x2y-8xy-9)
64
(—x2+27x-18y)-(—x2-14x-26y)
55
11
-—(8k3-8k2-2)-—(7k3+k2-5k)
63
(8m2+8m-9)-(9m+n+4)
(x2-9x+4)+3(4x2+4x)
-5(x2+7)-5(x2+6)
-(x2y-4xy-7)-7(x2y+4xy+6)
81
(—x2+25x-12y)-(—x2+16x-23y)
77
11
-—(6k3-6k2+8)+—(6k3-4k2-3k)
26